https://w3id.org/framester/conceptnet5/data/en/spermatid <https://w3id.org/framester/conceptnet5/schema/InstanceOf> <https://w3id.org/framester/conceptnet5/data/en/anatomical_structure> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/body_part> risorse dalla linked data cloud