user: Question: how many persons got the fourth position when the regional was Shikoku?
Columns: ['Regional', 'Champions', 'Runners-up', 'Third place', 'Fourth place']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Hokkaido', 'Sapporo Univ. GP', 'Norbritz Hokkaido', 'Sapporo Shukyudan', 'Sapporo Wins']
SQL:

assistant: SELECT COUNT("Fourth place") FROM "Table" WHERE "Regional" = 'Shikoku';