user: Question: What's the total enrollment ofr mcgill university that has a capacity less than 25012?
Columns: ['Institution', 'Team', 'City', 'Province', 'First season', 'Head coach', 'Enrollment', 'Football stadium', 'Capacity']
Types: ['text', 'text', 'text', 'text', 'real', 'text', 'real', 'text', 'real']
Sample row: ['Concordia University', 'Stingers', 'Montreal', 'QC', 1974.0, 'Gerry McGrath', 38809.0, 'Concordia Stadium', 4000.0]
SQL:

assistant: SELECT SUM("Enrollment") FROM "Table" WHERE "Institution" = 'mcgill university' AND "Capacity" < 25012.0;