Query error: EndPointInternalError: The endpoint returned the HTTP status code 500. Response: b'\n{ "head": { "link": [], "vars": ["subject", "predicate", "object"] },\n "results": { "distinct": false, "ordered": true, "bindings": [\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://www.w3.org/2000/01/rdf-schema#label" }\t, "object": { "type": "literal", "value": "Wild Rescuers series" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/author" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Stacy_Plays" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/book" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers%3A_Escape_to_the_Mesa" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/book" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers%3A_Expedition_on_the_Tundra" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/book" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers%3A_Guardians_of_the_Taiga" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/book" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers%3A_Sentinels_in_the_Deep_Ocean" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/features" }\t, "object": { "type": "literal", "value": "wolves" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/firstBook" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers%3A_Guardians_of_the_Taiga" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/firstPublished" }\t, "object": { "type": "literal", "value": "2018" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/genre" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/children%27s_literature" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/genre" }\t, "object": { "type": "literal", "value": "adventure fiction" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/inspiredBy" }\t, "object": { "type": "literal", "value": "StacyPlays YouTube channel" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/instanceOf" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/book_series" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/language" }\t, "object": { "type": "literal", "value": "English" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/mainCharacter" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Stacy" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/numberOfBooks" }\t, "object": { "type": "literal", "value": "4" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/publisher" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/HarperCollins" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/setting" }\t, "object": { "type": "literal", "value": "wilderness" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/targetAudience" }\t, "object": { "type": "literal", "value": "middle grade readers" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/bfsLayer" }\t, "object": { "type": "literal", "value": "8" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Wild_Rescuers_series" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/bfsParent" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/StacyPlays" }} ] } }Virtuoso S1TAT Error RC...: Returning incomplete results, query interrupted by result timeout. Activity: 63 rnd 22 seq 0 same seg 12 same pg 27 same par 0 disk 0 spec disk 0B / 0 messa\n\nSPARQL query:\n\n SELECT ?subject ?predicate ?object\n WHERE {\n ?subject ?predicate ?object .\n FILTER (STR(?subject) = "https://gptkb.org/entity/Wild_Rescuers_series")\n }\n '