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.

Context: Daxing was renamed Chang'an in year 618 when the Duke of Tang, Li Yuan, proclaimed himself the Emperor Gaozu of Tang. Link Information: born Li Yuan, courtesy name Shude, was the founder of the Tang dynasty of China, and the first emperor of this dynasty from 618 to 626. Answer: 8
How many years did Duke of Tang serve as emperor after renaming Daxing, Chang'an?

Context: She resigned to contest the Wolverhampton South-West parliamentary seat for Labour during the 1951 general election, but was defeated by the incumbent Conservative Enoch Powell. Link Information: She resigned to contest the Wolverhampton South-West parliamentary seat for Labour during the 1951 general election, but was defeated by the incumbent Conservative Enoch Powell Answer: 39
How old was Enoch Powell when he defeated Llewelyn-Davies in the general election?

Context: In July 1991, KTLA debuted the Los Angeles market's first live, local morning two-hour newscast, the KTLA Morning News, to compete with the network morning shows on KABC-TV (channel 7), KCBS-TV (channel 2) and KNBC (which each started at 7:00a.m., Link Information: The KTLA Morning News, anchored by Carlos Amezcua and Barbara Beck, Answer: Carlos Amezcua
Who were the intial anchors for the KTLA Morning News?