Question: Who owns Shangdong Airlines which operates mainly domestic trunk routes and whose focus city is Qingdao in Shandong Province, China?
Sentence (from "Qingdao Liuting International Airport"): Qingdao Liuting International Airport (IATA: TAO, ICAO: ZSQD) is the main airport serving the city of Qingdao in Shandong Province, China.
Relevant evidence: Yes