What is the relationship between Tullow Oil and Public Limited Company 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.

882.50p -1.56% FTSE 250 - Risers Auto Trader Group (AUTO) 319.70p +4.37% Indivior (Berlin: 2IV.BE - news ) (INDV) 234.00p +2.90% UDG Healthcare Public Limited Company (UDG) 514.50p +2.29% IMI (IMI (LSE: IMI.L - news ) ) 1,174.00p +2.09% Telecom Plus (LSE: TEP.L - news ) (TEP) 1,020.00p +1.80% Workspace Group (LSE: WKP.L - news ) (WKP) 914.50p +1.55% Evraz (EVR) 115.50p +1.40% Entertainment One Limited (Other OTC: ENTMF - news ) (ETO) 372.10p +1.39% Clarkson (CKN) 2,787.00p +1.35% Acacia Mining (LSE: ACA.L - news ) (ACA) 294.80p +1.31% FTSE 250 - Fallers Hunting (HTG) 543.50p -4.98% Tullow Oil (LSE: TLW.L - news ) (TLW) 333.60p -4.69% AO World (Other OTC: AOWDF - news ) (AO.)

Answer: legal_form