question: What was the sum of Revenue ($M), when the Debt as % of value was higher than 27, and the Operating income($m) was 77?
answer: SELECT SUM(revenue__) AS $m_ FROM table_name_35 WHERE debt_as__percentageof_value > 27 AND operating_income_$m_ = 77
context: CREATE TABLE table_name_35 (revenue__ INTEGER, debt_as__percentageof_value VARCHAR, operating_income_$m_ VARCHAR)