user: Question: Which Rank has a Network of BBC One, and a Number of Viewers of 30.15million? Question 2
Columns: ['Rank', 'Show', 'Number of Viewers', 'Date', 'Network']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, '1966 World Cup Final', '32.30million', '30 July 1966', 'BBC One']
SQL:

assistant: SELECT "Rank" FROM "Table" WHERE "Network" = 'BBC One' AND "Number of Viewers" = '30.15million';