Question: The Mitsubishi 4A9 engine was introduced by a company headquartered in what country?
Sentence (from "Mitsubishi Motors"): Mitsubishi Motors Corporation (Japanese: 三菱自動車工業株式会社 , Hepburn: Mitsubishi Jidōsha Kōgyō KK ) is a Japanese multinational automotive manufacturer headquartered in Minato, Tokyo, Japan.
Relevant evidence: Yes