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: Consider Input: Question: Who won the men's singles championship at the event where Kontinen reached the quarterfinals of the men's doubles tournament? Passage:His good results continued in 2016 as he won the title at the Brisbane International in January with John Peers. On April–May they won the BMW Open together. At the 2016 Wimbledon Championships he reached quarterfinals of the men's doubles tournament together with Peers and the final of the mixed doubles with Heather Watson, which they won in straight sets. On July Kontinen and Peers won the German Open Tennis Championships. On August Kontinen won the Winstom-Salem Open playing with Guillermo García-López. It was Kontinen's 10th doubles title in his career. He took the victory of St. Petersburg Open with Dominic Inglot. Kontinen and Peers had a successful end for the year as they won their first Masters title at Paris Masters and the season ending ATP World Tour Finals title. Kontinen reached the top 10 in rankings as a first Finnish tennis player ever.


Output: b


Input: Consider Input: Question: Which son was born first? Passage:Darius was the son of Hystaspes and the grandson of Arsames. Both men belonged to the Achaemenid tribe and were still alive when Darius ascended the throne. Darius justifies his ascension to the throne with his lineage. He claimed he could trace his ancestors back to Achaemenes, even though he was only distantly related. With this in mind, Darius married Atossa, daughter of Cyrus, with whom he had four sons: Xerxes, Achaemenes, Masistes and Hystaspes. He also married Artystone, another daughter of Cyrus, with whom he had two sons, Arsames and Gobryas. Darius married Parmys, the daughter of Bardiya, with whom he had a son, Ariomardus. Furthermore, Darius married Phratagune, with whom he had two sons, Abrokomas and Hyperantes. He also married another woman of the nobility, Phaidyme, the daughter of Otanes. It is unknown if he had any children with her. Before these royal marriages, Darius had married an unknown daughter of his good friend and lance carrier Gobryas from an early marriage, with whom he had three sons, Artobazanes, Ariabignes and Arsamenes. Any daughters he had with her are not known. Although Artobazanes was Darius's first-born, Xerxes became heir and the next king through the influence of Atossa; she had great authority in the kingdom as Darius loved her the most of all his wives.


Output: a


Input: Consider Input: Question: What is the name of the port at Eureka, California? Passage:After her acquisition by the U.S. Coast Guard she was converted for use as a buoy tender at the Bethlehem Shipyard in San Francisco. She was commissioned USCGC Magnolia (WAGL-328) on 19 October 1947. She was first assigned to U.S. Coast Guard Base Yerba Buena Island, San Francisco. Her primary duties there were aids to navigation (ATON), servicing light stations and lightships on the California coast, search and rescue, and law enforcement. From 28 to 29 April 1951 she assisted the Japanese MV Flyer. On 9 February 1960 she assisted the disabled MV Angelo Petri two miles south of the San Francisco Bar. On 5 June 1963 she assisted following the collision between the U.S. Navy Military Sea Transportation Service (MSTS) ship USNS Asterion (T-AF-63) and the Japanese merchantman MV Kokoku Maru and transported 19 crew members from the Japanese ship to San Francisco. From 21 to 24 June 1965 she escorted the damaged catamaran SV Judy Al 165 miles southwest of Eureka, California to that port as her hull was too damaged to permit towing. She then transferred to U.S. Coast Guard Base Tongue Point, Astoria, Oregon on 1 September 1965, and redesignated WLB-328. Her primary duties there were aids to navigation (ATON), search and rescue, and law enforcement. She also tended the Columbia River Lightship on the Columbia River Bar. On 6 December 1967 she escorted the distressed MV David E. Day, which had grounded on the Columbia River Bar. On 10 August 1968 she assisted following the collision between MV Seatrain Washington and SS Rose S 17 miles east of Cape Flattery, Washington in heavy fog. Magnolia was decommissioned on 13 August 1971. She was stored at U.S. Coast Guard Training Center (TRACEN) at Government Island, Alameda, California until sold.



Output: b