user: ### NOW ANSWER:
Question: Which Pct has Years of 1957–1970, and Wins smaller than 78?
Columns: ['Name', 'Years', 'Wins', 'Losses', 'Ties', 'Pct.']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['No coach', '1873–1889', 72.0, 19.0, 4.0, 0.779]
SQL:

assistant: SELECT SUM("Pct.") FROM "Table" WHERE "Years" = '1957–1970' AND "Wins" < 78.0;