In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.
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Question: Context: His father flew Spitfires during World War II and joined civil aviation in the post war period, flying for Gibraltar Airways and British European Airways. Link Information: GB Airways  Answer: GB Airways

Answer: Which civil company that Brown's father worked for was founded first?


Question: Context: Henry's famous Walk to Canossa Link Information: The Road to Canossa, sometimes called the Walk to Canossa (/Kanossa) or Humiliation of Canossa (), refers to Holy Roman Emperor Henry IV's trek to Canossa Castle, Italy, where Pope Gregory VII was staying as the guest of Margravine Matilda of Tuscany, at the height of the investiture controversy in January 1077 Answer: 1077 

Answer: What year did the Walk happen?


Question: Context: After the Norman Invasion of Ireland, the city was taken by Norman or Old English settlers. Link Information: In May 1169, Anglo-Norman mercenaries landed in Ireland at the request of Diarmait Mac Murchada (Dermot MacMurragh), the deposed King of Leinster, who had sought their help in regaining his kingdom. Answer: May 1169

Answer:
When did the event after which Limerick was taken by Norman or Old English settlers begin?