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.

On the supply side, recent speculation that Russia might be willing to cooperate with the Organization of the Petroleum Exporting Countries (OPEC) to curb output in support of prices was given a blow on Monday after the chief executive of Russian oil major Rosneft ruled out a Russian cut.

Answer: product_or_material_produced: Rosneft, Petroleum