Definition: In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: What age was Henry Hall the year Hughes appeared on "Guest Night"? Passage:After that he studied at the Royal Academy of Music and Dramatic Art. He had an early break in 1948 appearing with Ginger Rogers and Lizbeth Webb in Carissima, a West End musical. In 1951 he appeared on Henry Hall's "Guest Night". He was introduced by Hall as "the young Welsh tenor", as his stage name "David Hughes" which was his father's Christian names was typically Welsh. He appeared often in the 1950s on television and radio. These shows included Presenting David Hughes, Sunday Night at the London Palladium and 2 series of his own show Make Mine Music (1959). In 1954, while touring Australia, he arranged for his fiancée Anne Sullivan to join him there, and were married. He appeared in the stage show Summer Song in 1956, a biographical musical about Antonín Dvořák's visit to the United States. Sally Ann Howes was the female lead. In 1956 he had his only hit in the UK Singles Chart, "By The Fountains of Rome". The composer was Mátyás Seiber and the lyrics by Norman Newell, who also wrote hits for Ken Dodd ("Promises", 1966), Shirley Bassey ("Never Never Never", 1973) and Matt Monro ("Portrait of My Love", 1960).


b