Table: athlete_roster_3
Columns: name
nationality
position
appearances
starts
minutes
goals

Question: What is the position of the player who is from the United States and has 30 minutes? 
SQL: SELECT "position" FROM athlete_roster_3 WHERE "nationality" = 'United States' AND "minutes" = 30

Question: What is the most amount of goals any of the players had? 
SQL: SELECT MAX("goals") FROM athlete_roster_3