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.

The letter was signed by committee chairman Fred Upton, R-Mich., and ranking member Frank Pallone Jr., D-N.J., as well as Rep. Tim Murphy, R-Pa., chairman of the subcommittee on oversight and investigations, and Diana DeGette, D-Colo., the subcommittee’s ranking member.
position_held: Frank Pallone, member