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/Bus_Interchange_at_Ang_Mo_Kio" }\t, "predicate": { "type": "uri", "value": "https://www.w3.org/2000/01/rdf-schema#label" }\t, "object": { "type": "literal", "value": "Bus Interchange at Ang Mo Kio" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Bus_Interchange_at_Ang_Mo_Kio" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/address" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/53_Ang_Mo_Kio_Avenue_3%2C_Singapore_569933" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Bus_Interchange_at_Ang_Mo_Kio" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/adjacentTo" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/Ang_Mo_Kio_MRT_station" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Bus_Interchange_at_Ang_Mo_Kio" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/connectedTo" }\t, "object": { "type": "uri", "value": "https://gptkb.org/entity/AMK_Hub" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Bus_Interchange_at_Ang_Mo_Kio" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/hasFacility" }\t, "object": { "type": "literal", "value": "toilets" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Bus_Interchange_at_Ang_Mo_Kio" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/hasFacility" }\t, "object": { "type": "literal", "value": "retail shops" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Bus_Interchange_at_Ang_Mo_Kio" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/hasFacility" }\t, "object": { "type": "literal", "value": "bicycle parking" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Bus_Interchange_at_Ang_Mo_Kio" }\t, "predicate": { "type": "uri", "value": "https://gptkb.org/prop/hasFacility" }\t, "object": { "type": "literal", "value": "sheltered waiting area" }},\n { "subject": { "type": "uri", "value": "https://gptkb.org/entity/Bus_Interchange_at_Ang_Mo_Kio" }\t,Virtuoso S1TAT Error RC...: Returning incomplete results, query interrupted by result timeout. Activity: 109 rnd 47 seq 0 same seg 30 same pg 20 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/Bus_Interchange_at_Ang_Mo_Kio")\n }\n '