user: Question: what is the team when the rounds is All engine is Mercedes HWA and driver is Sam Abay?
Columns: ['Team', 'Driver', 'Class', 'Chassis', 'Engine', 'Rounds']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Hitech Racing', 'Max Chilton', 'C', 'Dallara F308', 'Mercedes HWA', 'All']
SQL:

assistant: SELECT "Team" FROM "Table" WHERE "Rounds" = 'All' AND "Engine" = 'Mercedes HWA' AND "Driver" = 'Sam Abay';