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/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://www.w3.org/2000/01/rdf-schema#label" }\t, "object": { "type": "literal", "value": "Rock and Roll (Parts 1 and 2)" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/album" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Glitter" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/artist" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Gary_Glitter" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/countryOfOrigin" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/United_Kingdom" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/genre" }\t, "object": { "type": "literal", "value": "glam rock" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/instanceOf" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/song" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/label" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Bell_Records" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/length" }\t, "object": { "type": "literal", "value": "3:00 (Part 1)" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/length" }\t, "object": { "type": "literal", "value": "3:01 (Part 2)" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/notableFor" }\t, "object": { "type": "literal", "value": "frequent use at sporting events" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/producer" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Mike_Leander" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/releaseYear" }\t, "object": { "type": "literal", "value": "1972" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/writer" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Mike_Leander" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/writer" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Gary_Glitter" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/bfsLayer" }\t, "object": { "type": "literal", "value": "7" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/bfsParent" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Gary_Glitter" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/B-side" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Part_2%29" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/B-side" }\t, "object": { "type": "literal", "value": "Rock and Roll (Part 1)" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/chartPositionUK" }\t, "object": { "type": "literal", "value": "2" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Rock_and_Roll_%28Parts_1_and_2%29" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/chartPositionUK" }\t, "object": { "type": "literal", "value": "7" }} ] } }Virtuoso S1TAT Error RC...: Returning incomplete results, query interrupted by result timeout. Activity: 60 rnd 21 seq 0 same seg 8 same pg 24 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/Rock_and_Roll_%28Parts_1_and_2%29")\n }\n '