No label defined (Q105868333)

SELECT ?item ?party ?district ?start ?end ?replaces ?replaced WHERE { ?item p:P39 ?statement . ?statement ps:P39 wd:Q18714088 ; pq:P2937 wd:Q105945957 . OPTIONAL { ?statement pq:P580 ?start } OPTIONAL { ?statement pq:P582 ?end } OPTIONAL { ?statement pq:P768 ?district } OPTIONAL { ?statement pq:P4100 ?party } OPTIONAL { ?statement pq:P1365 ?replaces } OPTIONAL { ?statement pq:P1366 ?replaced } }