user: Question: what is the owner of the C501
Columns: ['Locomotive', 'Entered service', 'Owner', 'Operator', 'Livery', 'Status']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['C501', '14 May 1977', 'Seymour Railway Heritage Centre', 'El Zorro', 'VR Blue & gold', 'Preserved - Operational']
SQL:

assistant: SELECT "Owner" FROM "Table" WHERE "Locomotive" = 'C501';