About: http://webisa.webdatacommons.org/244714666

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Sir Charles was for many years associated with the Royal Opera House and since 1964 he conducted 30 operas there, including Un Ballo in Maschera, which opened on the occasion of his 80th birthday.
http://www.w3.org/ns/prov#wasQuotedFrom	philharmonia.co.uk