user: ### NOW ANSWER:
Question: Who was the ConstruCtor when Eugenio Castellotti was the pole position and the raCe had a C tyre?
Columns: ['Race', 'Circuit', 'Date', 'Pole position', 'Fastest lap', 'Winning driver', 'Constructor', 'Tyre', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Argentine Grand Prix', 'Oscar Gálvez', '16 January', 'José Froilán González', 'Juan Manuel Fangio', 'Juan Manuel Fangio', 'Mercedes', 'C', 'Report']
SQL:

assistant: SELECT "Constructor" FROM "Table" WHERE "Tyre" = 'C' AND "Pole position" = 'Eugenio Castellotti';