Question: The WS-15, code name Emei, is a Chinese after burning turbofan engine, a stealth, twinjet, fifth-generation fighter aircraft developed by China's Chengdu Aerospace Corporation for what airforce?
Sentence (from "Chengdu Aircraft Industry Group"): The Chengdu Aircraft Industry Group or Chengdu Aerospace Corporation, a subsidiary of AVIC, is a Chinese aerospace conglomerate that designs and manufactures combat aircraft and is also a manufacturer of aircraft parts.
Relevant evidence: No