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.

Ex Input:
Question: What army did the USS Gunston Hall engage with during the assault on Kwajalein? Passage:After intensive shakedown along the California coast Gunston Hall prepared to sail for the Western Pacific, where she was to participate in every major operation from February 1944 to the end of the war, 18months later. Loading 225men from the 4th Marine Tank Battalion and 2amphibious units, as well as 15LVTs, 15tanks, 17LCMs, and 15,000 gallons of gasoline, Gunston Hall departed San Diego on 13 January 1944. On D-Day for the assault on Kwajalein, 1 February 1944, she stood offshore to unload her cargo as the Marines stormed the beaches on Roi and Namur Islands. Gunston Hall remained in the area to repair small craft until 6 February, when she reembarked her former passengers and equipment and sailed to Guadalcanal via Funa Futi. The pattern she set here held for her participation in eight further key invasion efforts in the Pacific as the Navy "Island-hopped" marines and Army troops ever closer to the Japanese home islands.

Ex Output:
b

Ex Input:
Question: Of the grasses that the essex skipper eats, which is the longest? Passage:Eggs are laid in strings on the stems of grasses where they remain over the winter. The Essex skipper's favoured foodplant is cock's-foot (Dactylis glomerata), and it rarely uses the small skipper's favoured foodplant Yorkshire fog. Essex skippers' other foods include creeping soft grass (Holcus mollis), couch grass (Elymus repens), timothy-grass (Phleum pratense), meadow foxtail (Alopecurus pratensis), false brome (Brachypodium sylvaticum) and tor-grass (Brachypodium pinnatum). This skipper's caterpillars emerge in the spring and feed until June before forming shelters from leaves tied with silk at the base of the foodplant to pupate. Adults fly from July through August. Like most skippers, they are fairly strictly diurnal, though individuals are very rarely encountered during the night.

Ex Output:
a

Ex Input:
Question: Which city was Schunk located in when he appeared as Max in Weber's Der Freischutz at the Bregenz Festival? Passage:From 1979 onwards, he worked as a freelance singer, performing internationally. He appeared at both the Hamburg State Opera and the Vienna State Opera in 1981 as the Emperor in Die Frau ohne Schatten by Richard Strauss. In 1983, he appeared as Max in Weber's Der Freischutz at the Bregenz Festival. The same year, he made his U.S. debut as Erik at the Lyric Opera of Chicago. In 1984 he took part in the Hamburg State Opera's tour of Japan. In 1986 he appeared as Florestan in Beethoven's Fidelio at the Metropolitan Opera, opposite Hildegard Behrens in the title role, returning in 1989 as Siegmund and in 1990 as the Emperor, a role which he had also performed for his 1987 debut at the Royal Opera House. In 1996, he appeared as Loge in Wagner's Das Rheingold at the Opera de Marseille. In addition to his opera activities, Schunk has also performed successfully in concerts. He recorded the tenor solo in Beethoven's Ninth Symphony in 1986, conducted by Georg Solti with the Chicago Symphony Orchestra & Chorus, alongside Jessye Norman, Reinhild Runkel and Hans Sotin.

Ex Output:
b