Utilize the input text as a context reference, choose the right relationship between Kinder Morgan and Houston from the options. 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.

June-August 2014 - FERC seeks data on Houston Ship Channel and other gas sales from several companies, including units of McGraw Hill, IntercontinentalExchange, BP, Energy Transfer (Stuttgart: 4ETA.SG - news ) Partners (Other OTC: PGPHF - news ) , Enbridge (Toronto: ENB.TO - news ) , Enterprise Products, Kinder Morgan (NYSE: KMI - news ) , Atmos Energy, Castleton Commodities, Tenaska, Integrys, Encana, Exelon, Chesapeake Energy (Other OTC: CHKDJ - news ) , Chevron (Swiss: CVX.SW - news ) , Enable Energy, Barclays (LSE: BARC.L - news ) and Total (Swiss: FP.SW - news ) .

Answer: headquarters_location