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.

In June, we announced that the LUMA Energy, a joint venture between Quanta and Canadian Utilities Limited and ATCO company, was selected by the Puerto Rico Public-Private Partnership Authority for a 15-year operation and maintenance agreement with the Puerto Rico Electric Power Authority, or PREPA, to operate, maintain and modernize PREPA’s more than 18,000-mile electric transmission and distribution system in Puerto Rico.

Answer: subsidiary: ATCO, Canadian Utilities