Assertion: cartoon | /r/AtLocation | only two years
Facets:
value: with the first set of them
type: OTHER
Source sentences:
text: The artwork was streamlined and simplified for the television budgets, and 220 cartoons were produced in only two years, with the first set of them premiering in the autumn of 1960, and the last of them debuting during the 1961–1962 television season.