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.

RingCentral , Inc. (NYSE:RNG), a leading provider of cloud business communication solutions, today announced that Gartner has recognized RingCentral as a leader in the Magic Quadrant for Unified Communications as a Service (UCaaS) Worldwide published on September 3, 2015.

Answer: creator: Magic Quadrant, Gartner; owned_by: Magic Quadrant, Gartner