user: Question: What was the Zakspeed 1500/4 1.5 L4 t chassis?
Columns: ['Entrant', 'Constructor', 'Chassis', 'Engine', 'Tyre', 'Driver', 'Rounds']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Camel Team Lotus Honda', 'Lotus - Honda', '100T', 'Honda RA168E 1.5 V6 t', 'G', 'Nelson Piquet', 'All']
SQL:

assistant: SELECT "Chassis" FROM "Table" WHERE "Engine" = 'Zakspeed 1500/4 1.5 L4 t';