user: Question: Tell me the season for Quarter-final position of 4th
Columns: ['Season', 'Div.', 'Pos.', 'Pld.', 'Pts.', 'Play-offs', 'Trophy']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Edinburgh Rocks', 'Edinburgh Rocks', 'Edinburgh Rocks', 'Edinburgh Rocks', 'Edinburgh Rocks', 'Edinburgh Rocks', 'Edinburgh Rocks']
SQL:

assistant: SELECT "Season" FROM "Table" WHERE "Play-offs" = 'Quarter-final' AND "Pos." = '4th';