CREATE TABLE table_name_50 (pick__number VARCHAR2, position VARCHAR2, college_junior_club_team VARCHAR2)

What is the pick number for position of D from the University of Maine (NCAA)?
SELECT pick__number FROM table_name_50 WHERE position = "d" AND college_junior_club_team = "university of maine (ncaa)"
SELECT "pick__number" FROM "table_name_50" WHERE "college_junior_club_team" = "university of maine (ncaa)" AND "d" = "position"