assertion retraction graph subject predicate object datatype annotation 1 0 graph ONTIE:0002159 OBI:9991118 sperm autoantigen xsd:string 1 0 graph ONTIE:0002158 OBI:9991118 sperm autoantigen xsd:string 1 0 graph ONTIE:0002187 OBI:9991118 sperm autoantigen xsd:string