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.

Royal Dutch Shell Plc said Thursday it’s braced for a “prolonged downturn,” echoing a forecast from BP Plc Chief Executive Officer Bob Dudley that prices will stay “lower for longer.”

Answer: position_held: Bob Dudley, Chief Executive Officer; employer: Bob Dudley, BP