What is the relationship between Weir Group and London Stock Exchange 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.

Market Movers techMARK 3,190.03 +0.47% FTSE 100 6,585.92 +0.27% FTSE 250 17,673.06 +0.44% FTSE 100 - Risers TUI AG Reg Shs (DI (KSE: 003160.KS - news ) ) (TUI (LSE: TUI.L - news ) ) 1,147.00p +2.96% ARM Holdings (LSE: ARM.L - news ) (ARM) 938.50p +2.18% Hikma Pharmaceuticals (LSE: HIK.L - news ) (HIK) 2,382.00p +1.75% International Consolidated Airlines Group SA (CDI) (IAG) 546.00p +1.58% ITV (ITV (LSE: ITV.L - news ) ) 262.90p +1.54% St James's Place (STJ) 975.50p +1.40% Sage Group (LSE: SGE.L - news ) (SGE) 525.00p +1.35% Tesco (TSCO) 204.40p +1.19% Sky (Amsterdam: BK8.AS - news ) (SKY (LSE: BSY.L - news ) ) 1,091.00p +1.11% London Stock Exchange Group (LSE) 2,639.00p +1.07% FTSE 100 - Fallers Glencore (Amsterdam: GX8.AS - news ) (GLEN) 175.10p -0.96% Weir Group (WEIR) 1,473.00p -0.87% BP (BP.)

Answer: stock_exchange