Table for the 3 triples with object "opus" sorted by label

Subject	Predicate
lp_eu:2001-07-04-Speech-3-349	lpv:unclassifiedMetadata
lp_eu:2001-07-04-Speech-3-349	lpv:unclassifiedMetadata
lp_eu:2009-01-12-Speech-1-077	lpv:unclassifiedMetadata