Teacher:Generate a correct and concise answer for the question based on the words in the context.
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.
Question : Which company is the parent company of Vueling?
Student:
International Airlines Group