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.

Other recent coal bankruptcies include Walter Energy Inc. and Patriot Coal Corp, which filed its second chapter 11 bankruptcy petition on May 12.

Answer: product_or_material_produced: Walter Energy, coal; product_or_material_produced: Patriot Coal, coal