Table: tennis_match_results_18
Columns: outcome
date
surface
partner
opponents
score

Question: What was Olga Govortsova's score when she played on a clay surface on 19 May 2008?
SQL: SELECT "score" FROM tennis_match_results_18 WHERE "surface" = 'clay' AND "date" = '19 may 2008'

Question: What was Olga Govortsova's outcome when she played on a grass surface?
SQL: SELECT "outcome" FROM tennis_match_results_18 WHERE "surface" = 'grass'

Question: What was Olga Govortsova's goal when she played on a clay surface on 26 May 2012?
SQL: SELECT "score" FROM tennis_match_results_18 WHERE "surface" = 'clay' AND "date" = '26 may 2012'