Assertion: bliss | /r/CapableOf | collaborate with the librettist
Facets:
value: on an opera for television
type: TRANSITIVE-OBJECT
value: in 1959
type: TEMPORAL
Source sentences:
text: In 1959-60 he collaborated with the librettist Christopher Hassall on an opera for television, based on the scriptural story of Tobias and the Angel .