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.

\r The Greek Referendum Outcomes Explained in One Chart \r What it’s Like to be a Stock Broker in Greece \r EU Doubts The creditor institutions still view the July 5 referendum as a potential barrier to agreement, according to a European Union official.

Answer: operator: EU, European Union