Assertion: grant | /r/CapableOf | popularize the -gry puzzle
Facets:
value: on his wmca show
type: LOCATION
value: in 1975
type: TEMPORAL
Source sentences:
text: Grant popularized the -gry puzzle, a word game, on his WMCA show in 1975, stating some version of the question "There are three words in the English language that end in -gry.