Assertion: orchestra's conductor | /r/HasProperty | needed
Facets:
Source sentences:
text: The orchestra recognised that a strong chief conductor was needed to restore its standards and finances, but there was no immediately obvious candidate.
text: It was at the beginning of the 19th century that orchestras got large enough for a conductor to be necessary - the main reason is that in a large orchestra, the time taken for the sound to travel from the front of the orchestra to the back is long enough for there to be a lag between what the violins and the timpani are playing (timps in the wrong place will bring everything to a halt).