Table for the 3 triples with object Plainsong on predicate ns2:performer sorted by label

Subject	Predicate
?:Performance 2514 in Playhouse Theatre, Northumberland Avenue	ns2:performer
?:Performance 2515 in Studio T1, Transcription Service, Kensington House	ns2:performer
?:Performance 2516 in Langham 1	ns2:performer