Utilize the input text as a context reference, choose the right relationship between CRH and London Stock Exchange 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.

201.50p +0.95% Shire Plc (Xetra: S7E.DE - news ) (SHP) 5,345.00p +0.85% Barratt Developments (LSE: BDEV.L - news ) (BDEV) 652.00p +0.77% CRH (CRH (NYSE: CRH - news ) ) 1,954.00p +0.67% Meggitt (MGGT) 507.50p +0.59% Carnival (CCL) 3,504.00p +0.55% London Stock Exchange Group (LSE) 2,578.00p +0.47% Direct Line Insurance Group (DLG) 385.70p +0.42% Hargreaves Lansdown (LSE: HL.L - news ) (HL.)

Answer: stock_exchange