instruction:
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.
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: Boynes was the 13th selection in the 1978 NBA Draft by the New Jersey Nets Link Information: none Answer: none
answer:
What position did Boynes play in the NBA during the 1978-1980 seasons?


question:
Context: When Simmons was hurt in July, Jack Wilson, Paul Janish, and Martín Prado filled in for him. Link Information: Jack Eugene Wilson (born December 29, 1977) Answer: Martín Prado
answer:

Which of the men that filled in for Simmons was the youngest?