Question: Does the Saab 38 and the Saab JAS 39 Gripen have a single-engine or multiple engines?
Sentence (from "Industrigruppen JAS"): The tender was submitted in June 1981 to Försvarets Materielverk (FMV), and on 30 June 1982 a contract was signed for development, and for five prototype aircraft and 30 production aircraft.
Relevant evidence: No