Table for the 4 triples with object "1820-70" sorted by label

Subject	Predicate
mdb:kok: Boom, Reinder Reinders	mdb:bronid
mdb:schipper: Mulder, Jan Berends	mdb:bronid
mdb:stuurman: Blaauw, Hindrik Tiddes	mdb:bronid
mdb:Vrouw Catharina (1820-04-26)	mdb:bronid