Table for the 3 triples with object "1906-06-15" on predicate mdb:datum sorted by label

Subject	Predicate
mdb:kapitein: Slangenberg, R. (uit Groningen (NL))	mdb:datum
mdb:persoonscontract-del_gem-1906-91b-32891-A_Dijk_van	mdb:datum
mdb:Zwaluw (1906-06-15)	mdb:datum