Table for the 4 triples with object John Martyn on predicate ns1:performer sorted by label

Subject	Predicate
?:Performance 1695 in Playhouse Theatre, Northumberland Avenue	ns1:performer
?:Performance 1696 in Maida Vale 4	ns1:performer
?:Performance 1697 in Maida Vale 4	ns1:performer
?:Performance 1698 in Maida Vale 4	ns1:performer