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.

SpaceX CEO Elon Musk this week said the company is still trying to understand what caused the Falcon 9 rocket to explode after liftoff on June 28, given conflicting data radioed back to the ground before the blast.

Answer: employer: Elon Musk, SpaceX; owner_of: Elon Musk, SpaceX