SELECT count(*) FROM Employee
How many employees do we have?
[Schema (values) (types)]: | flight_1 |  flight : flno (text) , origin (number) , destination (text) , distance (text) , departure_date (number) , arrival_date (time) , price (time) , aid (number) | aircraft : aid (text) , name (number) , distance (text) | employee : eid (text) , name (number) , salary (text) | certificate : eid (text) , aid (number);