user: Question: What season was pLayed at Safeco FieLd, against the Boston Red Sox, with a decision of L?
Columns: ['Season', 'Pitcher', 'Decision', 'Opponent', 'Location']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1977', 'Diego Seguí Category:Articles with hCards', 'L', 'California Angels', 'Kingdome']
SQL:

assistant: SELECT "Season" FROM "Table" WHERE "Location" = 'Safeco Field' AND "Decision" = 'L' AND "Opponent" = 'Boston Red Sox';