In the context of the input sentence, determine the relationship between 'Tullow Oil' and 'oil company'.
Options: platform, distributed by, headquarters location, industry

Tullow Oil (LSE: TLW.L - news ) led the fallers, declining 8.67% to 222.20p while fellow oil company Premier Oil (LSE: PMO.L - news ) was not far behind, falling by 7.81% to 116.80p.
industry