Given phrases that describe the relationship between two words/phrases as options, extract the word/phrase pair and the corresponding lexical relationship between them from the input text. The output format should be "relation1: word1, word2; relation2: word3, word4". Options: 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.

However, Qantas chief executive Alan Joyce has said the carrier would need to sign an agreement with long-haul pilots that allowed the aircraft to operate economically as one of three preconditions before the planes could be ordered.
chief_executive_officer: Qantas, Alan Joyce; employer: Alan Joyce, Qantas