user: Question: What did the home team score when the away team was Hawthorn and there was a crowd larger than 20851?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['St Kilda', '13.14 (92)', 'South Melbourne', '11.6 (72)', 'Moorabbin Oval', 20851.0, '25 July 1970']
SQL:

assistant: SELECT "Home team score" FROM "Table" WHERE "Crowd" > 20851.0 AND "Away team" = 'Hawthorn';