Table: maria_jose_martinez_sanchez
Columns: outcome
date
tournament
surface
opponent
score

Question: What is the Date, when the Opponent is Gisela Dulko?
SQL: SELECT "date" FROM maria_jose_martinez_sanchez WHERE "opponent" = 'gisela dulko'

Question: What is the Tournament, when the Opponent is Patricia Mayr-Achleitner?
SQL: SELECT "tournament" FROM maria_jose_martinez_sanchez WHERE "opponent" = 'patricia mayr-achleitner'