user: Question: Which Locomotive Entered Service in November 1984 and has an Operator of Southern Shorthaul Railroad?
Columns: ['Locomotive', 'Serial No', 'Entered service', 'Owner', 'Operator', 'Livery', 'Gauge', 'Status']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['G511', '84/1239', 'October 1984', 'Chicago Freight Car Leasing Australia', 'Southern Shorthaul Railroad', 'SSR yellow & black', 'Standard', 'Operational']
SQL:

assistant: SELECT "Locomotive" FROM "Table" WHERE "Operator" = 'Southern Shorthaul Railroad' AND "Entered service" = 'November 1984';