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.

Example Input: Question: Did the diesel engines used for power and cruising come from the same manufacturer? Passage:German Type IXD2 submarines were considerably larger than the original Type IXs. U-861 had a displacement of when at the surface and while submerged. The U-boat had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .

Example Output: a

Example Input: Question: What substance was the helmet gilded with? Passage:The tomb was originally a monumental temple at Golyama Kosmatka Mound, built in the second half of the 5th century BC. After extended use as a temple, at the later part of the 3rd century BC, Seuthes lll was buried inside. The sarcophagus-chamber contained personal belongings that were necessary for the afterlife of the King. It includes knee pads, a gilded helmet with images, leather armour with a collar (plastron made of golden threads), a large sword and spears. There are bronze vessels, and three big ceramic amphora which were filled with thick Thracian wine. The floor and the ritual bed are covered by a carpet woven in gold thread. The total weight of the gold including all the objects is more than one kilogram. There are thirteen gold appliques for horse halters with images of human, animals and plants - objects which are rare in Thracian archaeology. Another two rectangular objects are golden with figures of standing warriors, used as a decoration for the sword sheath. There is a massive circular decoration for the King's armour. The handle of the rod is also golden. In the grave are placed golden vessels with two handles for drinking wine, also called kiliks, and a remarkable golden wreath with twigs, leaves and acorns and many other items.

Example Output: a

Example Input: Question: Which work was awarded the Pulitzer Prize for Music the year before Whitman's poem garnered the prize? Passage:Whitman's poem appears in the Broadway musical Street Scene (1946) which was the collaboration of composer Kurt Weill, poet and lyricist Langston Hughes, and playwright Elmer Rice. Rice adapted his 1929 Pulitzer prize-winning play of the same name for the musical. In the play, which premiered in New York City in January 1947, the poem's third stanza is recited, followed by duet, "Don't Forget The Lilac Bush", inspired by Whitman's verse. Weill received the first Tony Award for Best Original Score for this work African-American composer George T. Walker, Jr. (born 1922) set Whitman's poem in his composition Lilacs for voice and orchestra which was awarded the 1996 Pulitzer Prize for Music. The work, described as "passionate, and very American," with "a beautiful and evocative lyrical quality" using Whitman's words, was premiered by the Boston Symphony Orchestra on February 1, 1996. Composer George Crumb (born 1929) set the Death Carol in his 1979 work Apparition (1979), an eight-part song cycle for soprano and amplified piano.

Example Output:
b