Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: 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.
Text: BA has already decided to exit its Boeing 747 fleet with early retirement of the remaining 30 aircraft, as well around eight Airbus 318s and six Boeing 777s for up to two years until longhaul demand returns.
user
developer: Boeing 747, Boeing; product_or_material_produced: Boeing, Boeing 747
assistant