Table: draft_picks_1991_2
Columns: round
pick
player
position
school

Question: What round was Joe Sims picked?
SQL: SELECT AVG("round") FROM draft_picks_1991_2 WHERE "player" = 'joe sims'

Question: What was Moe Gardner's pick?
SQL: SELECT "pick" FROM draft_picks_1991_2 WHERE "player" = 'moe gardner'

Question: What was the highest round that had northwestern?
SQL: SELECT MAX("round") FROM draft_picks_1991_2 WHERE "school" = 'northwestern'