Table: pga_tour_1998
Columns: date
tournament
location
winner
score
1st_prize

Question: Which 1st prize ($) has a Winner of scott simpson (7)?
SQL: SELECT SUM("1st_prize") FROM pga_tour_1998 WHERE "winner" = 'scott simpson (7)'

Question: How many 1st prizes have a Date of aug 17?
SQL: SELECT COUNT("1st_prize") FROM pga_tour_1998 WHERE "date" = 'aug 17'

Question: Which Tournament has a Location of texas, and a Winner of tom watson (39)?
SQL: SELECT "tournament" FROM pga_tour_1998 WHERE "location" = 'texas' AND "winner" = 'tom watson (39)'