What is the relationship between Airbus A380 and Singapore Airlines in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

On the major airlines operating long-haul services out of Sydney and Melbourne, economy seat width ranges from 43 centimetres to the 48.25 centimetres on Singapore Airlines Boeing 777‑300ER, Airbus A380 and A330-300 flights.

Answer: operator