What is the relationship between energy company and natural gas in the context of the input sentence. Choose an answer from: 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