user: Question: When Birkenhead is the city/town and Merseyside is the county and England is the country how many ranks are there?
Columns: ['Rank', 'City/Town', 'County', 'Region/Province', 'Population', 'Country']
Types: ['real', 'text', 'text', 'text', 'real', 'text']
Sample row: [1.0, 'Dublin', 'County Dublin', 'Leinster', 505739.0, 'Republic of Ireland']
SQL:

assistant: SELECT COUNT("Rank") FROM "Table" WHERE "Country" = 'England' AND "County" = 'Merseyside' AND "City/Town" = 'Birkenhead';