user: Question: What was the engine of the Hoover Motor Express after 1955 with greater than 0 points?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1950.0, 'Blue Crown Spark Plug / Moore', 'Kurtis Kraft 2000', 'Offenhauser L4', 1.0]
SQL:

assistant: SELECT "Engine" FROM "Table" WHERE "Year" > 1955.0 AND "Points" > 0.0 AND "Entrant" = 'Hoover Motor Express';