user: ### NOW ANSWER:
Question: What is Season, when Third is "Glen Muirhead"?
Columns: ['Season', 'Skip', 'Third', 'Second', 'Lead']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['2006–07', 'David Murdoch', 'Ewan MacDonald', 'Warwick Smith', 'Euan Byers']
SQL:

assistant: SELECT "Season" FROM "Table" WHERE "Third" = 'Glen Muirhead';