Assertion: glider's flight | /r/AtLocation | the united states
Facets:
value: before its april 1907 issue
type: TEMPORAL
Source sentences:
text: However, the same magazine issue also claimed that no public flight had been made in the United States before its April 1907 issue.
text: However, the same magazine issue also claimed that no public flight had been made in the United States before its April 1907 issue.