Question: Is proinsulin a protein?
SPARQL:
PREFIX dbo: <http://dbpedia.org/ontology/> PREFIX res: <http://dbpedia.org/resource/> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> ASK WHERE { res:Proinsulin rdf:type dbo:Protein . }