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.

St George chief economist Hans Kunnen said prices in most major bond markets were little changed after the comments from US Fed chair Janet Yellen "added no fresh insights into monetary policy thinking", and reiterated a US interest rate rise is likely in 2015.

Answer: position_held: Janet Yellen, economist