Sentence examples for this was first from inspiring English sources

This was first done in 1948.

"Because, after all, this was first your land".

This was first reported by Newsweek in December.

This was first published to considerable acclaim in 1999.

(Indeed, this was first demonstrated in Dr Gage's laboratory).

This was first used by Battle [13].

This was sixth grade.

This was fourth among Democrats.

"This is First Avenue".

This is first increase since 1933.

This is FIRST.