Table: grand_slam_leaders
Columns: years_led
span_of_years_led
player
titles_won_at_point_of_lead
total_career_titles
tournament_at_which_lead_began

Question: How many career titles does roy emerson have?
SQL: SELECT "total_career_titles" FROM grand_slam_leaders WHERE "player" = 'Roy Emerson'

Question: What were the total career titles of the player who led for 5 years?
SQL: SELECT COUNT("total_career_titles") FROM grand_slam_leaders WHERE "span_of_years_led" = 5

Question: Of the players whose lead began at the australian championships, what was the shortest span of years led?
SQL: SELECT MIN("span_of_years_led") FROM grand_slam_leaders WHERE "tournament_at_which_lead_began" = 'Australian Championships'

Question: At which tournament did william renshaw begin his lead when he had won 7 titles?
SQL: SELECT "tournament_at_which_lead_began" FROM grand_slam_leaders WHERE "player" = 'William Renshaw' AND "titles_won_at_point_of_lead" = 7

Question: At what tournament did pete sampras begin his lead?
SQL: SELECT "tournament_at_which_lead_began" FROM grand_slam_leaders WHERE "player" = 'Pete Sampras'