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.

904.50p +0.72% FTSE 100 - Fallers Antofagasta (LSE: ANTO.L - news ) (ANTO) 561.50p -2.09% Barratt Developments (LSE: BDEV.L - news ) (BDEV) 640.50p -1.91% BHP Billiton (BLT) 1,112.50p -1.85% Tesco (TSCO) 198.60p -1.78% Anglo American (AAL) 741.90p -1.76% Persimmon (PSN) 2,084.00p -1.74% Fresnillo (Amsterdam: FN6.AS - news ) (FRES) 659.50p -1.71% GKN (GKN (LSE: GKN.L - news ) ) 294.90p -1.67% Royal Dutch Shell (Xetra: R6C1.DE - news ) 'B' (RDSB) 1,782.50p -1.63% Royal Dutch Shell 'A' (RDSA) 1,764.00p -1.62% FTSE 250 - Risers OneSavings Bank (Stuttgart: 2OS.SG - news ) (OSB) 328.00p +4.13% PayPoint (PAY) 1,038.00p +3.80% Telecom Plus (LSE: TEP.L - news ) (TEP) 1,145.00p +3.62% UDG Healthcare Public Limited Company (UDG) 539.50p +3.06% Redefine International (RDI) 55.50p +2.97% Just Retirement Group (JRG) 186.30p +2.93% Zoopla Property Group (WI) (ZPLA) 272.10p +2.68% Cranswick (CWK) 1,697.00p +2.41% Balfour Beatty (Other OTC: BAFBF - news ) (BBY) 270.00p +2.27% Allied Minds (Other OTC: ALLWF - news ) (ALM) 465.80p +2.26% FTSE 250 - Fallers Lonmin (LMI) 33.01p -7.64% Cairn Energy (CNE) 143.20p -7.25% Evraz (EVR) 86.95p -5.59% Fidelity China Special Situations (FCSS) 128.40p -4.46% Templeton Emerging Markets Inv Trust (TEM) 425.40p -3.01% Bovis Homes Group (BVS) 1,129.00p -2.92% Tullow Oil (LSE: TLW.L - news ) (TLW) 211.10p -2.85% Aggreko (EUREX: AGKF.EX - news ) (AGK) 1,064.00p -2.56% Kaz Minerals (LSE: KAZ.L - news ) (KAZ) 146.20p -2.47% Murray International Trust (MYI) 835.00p -2.34% FTSE TechMARK - Risers UCW Limited (UCW) A$0.01 +8.33% Sepura (SEPU) 161.00p +2.71% Torotrak (TRK) 6.25p +1.96% KCOM Group (LSE: KCOM.L - news ) (KCOM) 94.00p +1.90% Dialight (DIA (Amsterdam: DI6.AS - news ) ) 556.50p +1.18% Consort Medical (Other OTC: CSRMF - news ) (CSRT) 952.50p +1.11% NCC Group (LSE: NCC.L - news ) (NCC (BSE: NCC6.BO - news ) ) 247.00p +0.82% RM (RM (LSE: RM.L - news ) .)

Answer: legal_form