user: Question: what number is associated with the Baltic fleet and Leninets (Ленинец)?
Columns: ['Number', 'Name', 'Meaning', 'Fleet', 'Launched']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['L1', 'Leninets (Ленинец)', 'Follower of Lenin', 'Baltic', '28 February 1931']
SQL:

assistant: SELECT "Number" FROM "Table" WHERE "Fleet" = 'Baltic' AND "Name" = 'Leninets (Ленинец)';