Teacher:Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
Teacher: Now, understand the problem? Solve this instance: Context : In November 2012, International Airlines Group, whose subsidiary Iberia held a 45.85% stake in Vueling, offered to buy the remaining 54.15% of the company with both Iberia and IAG owning both shares and not resulting in the company being wholly owned by IAG through 100% of shares.
Answer : International Airlines Group
Student:
Which company is the parent company of Vueling?