Table: tennis_tournaments
Columns: tournament
country
location
began
court_surface

Question: what is the tournament when the court surface is clay and began in 1892?
SQL: SELECT "tournament" FROM tennis_tournaments WHERE "court_surface" = 'clay' AND "began" = 1892

Question: what is the location when began is before 1990 and the country is france?
SQL: SELECT "location" FROM tennis_tournaments WHERE "began" < 1990 AND "country" = 'france'

Question: what is the court surface when the tournament is paris masters?
SQL: SELECT "court_surface" FROM tennis_tournaments WHERE "tournament" = 'paris masters'

Question: what is the tournament when the country is united states?
SQL: SELECT "tournament" FROM tennis_tournaments WHERE "country" = 'united states'

Question: what is the earliest began when the court surface is clay in hamburg?
SQL: SELECT MIN("began") FROM tennis_tournaments WHERE "court_surface" = 'clay' AND "location" = 'hamburg'