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 is the population of the town where F-15Es from 492d and 494th FS were deployed to in August 1993? Passage:Operation Deny Flight was a United Nations-enforced no-fly zone over Bosnia and Herzegovina due to the deteriorating situation in the Balkans. In August 1993, F-15Es from 492d and 494th FS deployed to Aviano, Italy. In late 1993, NATO ordered a limited F-15E strike at Udbina airfield, targeting Serbian forces in neighboring Croatia. Eight F-15Es armed with GBU-12s took off to attack an SA-6 anti-aircraft vehicle; the mission was cancelled mid-flight over the application of stringent Rules of Engagement. In December 1993, F-15Es launched to destroy a pair of SA-2 sites which had fired upon two Royal Navy Sea Harrier FRS 1s. In August 1995, F-15Es of 90th Fighter Squadron joined the two other squadrons. The 492d and 494th flew over 2,500 sorties since Deny Flight had begun, 2,000 of these were by 492d. In August 1995, in support of NATO's Operation Deliberate Force, F-15Es flew strike missions against Serbian armor and logistics around the Bosnian capital, Sarajevo. On 9 September, an F-15E deployed the first GBU-15 bomb for the type; a total of nine were dropped against Bosnian-Serb ground forces and air defense targets around Banja Luka.

Output:
b