user: Question: How many entries are there for season where mls regular season was 5th, East (10-12-8)?
Columns: ['Season', 'MLS Regular Season', 'MLS Cup Playoffs', 'Lamar Hunt U.S. Open Cup', 'CONCACAF Champions Cup / CONCACAF Champions League']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1996.0, '4th, East (15-17)', 'Lost Conference Semifinals ( Tampa Bay Mutiny 1-2)', 'Did not enter', 'Did not qualify']
SQL:

assistant: SELECT COUNT("Season") FROM "Table" WHERE "MLS Regular Season" = '5th, East (10-12-8)';