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.

Matador Resources Company ( MTDR ) (“Matador” or the “Company”), an independent energy company engaged in the exploration, development, production and acquisition of oil and natural gas resources, with a particular emphasis on oil and natural gas shale plays and other unconventional plays and currently focused on its Permian Basin operations in Southeast New Mexico and West Texas, today provided a summary of its Annual Shareholders Meeting and an operational update since the time of the annual meeting, specifically addressing ongoing activities in the Delaware Basin.

Answer: product_or_material_produced: energy company, natural gas