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: 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: How long had Jacob Shaw been captain of the regiment before Learmonth entered service? Passage:George Learmonth, baptized by Russian Orthodox Church as Yuri Andreevich Lermont (; 1590s1633) was a Scottish soldier in Russian service. Entered Russian service in 1613 as the ensign in regiment of captain-rittmeister Jacob Shaw. At least six of former members of the Belaia garrison, including George Learmonth, helped decisively turn back Prince Wladyslaw's troops in intense fighting at Moscow's Arbat Gates of Bely Gorod during defending Moscow against a Polish army. In that battle, Ensign George Learmonth's bravery was on display 'for all to see'. When Lieutenant David Edwards was killed in the defence of Moscow, the Irish soldiers in his company immediately petitioned to have George Learmonth replace him. Newly promoted Lieutenant Yuri Lermont received fifteen rubles per month. During the Smolensk War (16321634) he's Rittmeister of Moscouvite Reiters regiment of Charles d'Ebert, under command of Prince Semyon Prozorovsky, died in battle against units of Field Hetman of Lithuania Krzysztof Radziwi on 30 August 1633.

Ex Output:
b

Ex Input:
Question: Is the player Silva replaced on his Primeira Liga debut a Brazilian? Passage:He made his Primeira Liga debut for FC Porto on 10 August 2019 in a 21 loss at Gil Vicente, playing the final 11 minutes in place of Otavinho; at 17 years and 22 days, he surpassed Bruno Gama as the youngest league player in the club's history. On 19 September against BSC Young Boys in the UEFA Europa League group stage, he became the club's youngest player in European competitions, beating Ruben Neves. Six days later, he became the club's youngest starter in any competition when he lined up against C.D. Santa Clara in the Taca da Liga group stage, beating a record held by Serafim Pereira since 1960.

Ex Output:
b