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.

Qantas has signalled the potential to fly more routes from cities other than Sydney once it receives its new Boeing 787-9 aircraft from 2017 and chief executive Alan Joyce has mentioned Melbourne-Dallas as a possibility.

Answer: chief_executive_officer: Qantas, Alan Joyce; employer: Alan Joyce, Qantas