user: Question: How many ranks have an industry of health care?
Columns: ['Rank', 'Name', 'Headquarters', 'Primary industry', 'Market value ( USD million)']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'General Electric', 'United States', 'Conglomerate', 299336.0]
SQL:

assistant: SELECT COUNT("Rank") FROM "Table" WHERE "Primary industry" = 'health care';