Table: nhl_draft_1994_4
Columns: pick
player
position
nationality
nhl_team
college_junior_club_team

Question: What is the nationality of the Washington Capitals?
SQL: SELECT "nationality" FROM nhl_draft_1994_4 WHERE "nhl_team" = 'washington capitals'

Question: On what NHL team does Roman Vopat play for?
SQL: SELECT "nhl_team" FROM nhl_draft_1994_4 WHERE "player" = 'roman vopat'

Question: What is the position of the player from the Ukraine?
SQL: SELECT "position" FROM nhl_draft_1994_4 WHERE "nationality" = 'ukraine'