In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Example Input: Question: Who are the Gestapo? Passage:On 30 June 1943 he was arrested by the Gestapo in Warsaw and sent to Berlin. Rowecki was arrested due to his betrayal by Ludwik Kalkstein "Hanka", Eugeniusz Swierczewski "Genes" and Blanka Kaczorowska "Sroka" who were Gestapo agents. All of them were members of the Home Army but in fact collaborated with the Gestapo. Swierczewski, Kalkstein and Kaczorowska were sentenced to death for high treason by the Secret War Tribunal of the Polish Secret State. The sentence on Eugeniusz Swierczewski was carried out by troops commanded by Stefan Rys ("Jozef"). They hanged Swierczewski in the basement of the house at 74 Krochmalna Street in Warsaw. Kalkstein received protection from the Gestapo and was not harmed. He fought in a Waffen SS unit during the Warsaw Uprising of 1944 under the name of Konrad Stark. After the war, he worked for the Polish Radio station in Szczecin and was later recruited as an agent by the Urząd Bezpieczeństwa. In 1982, he emigrated to France; he died in 1994. Blanka Kaczorowska also survived the war. Her death sentence was not carried out because she was pregnant. After the war, she also worked as a secret agent for the Urząd Bezpieczeństwa and later for the renamed Służba Bezpieczeństwa. She emigrated to France in 1971. She died in 2002

Example Output: b

Example Input: Question: How many different charts was piece by piece on at the same time in 2016? Passage:"Piece by Piece" made its debut chart appearance on the Billboard Adult Top 40 chart on the chart week ending December 19, 2015. It attained a peak position of number 32 and stayed on the chart for nine weeks. Following Clarkson's performance of the song on American Idol, Nielsen Soundscan announced that digital copies of the song had sold a total of 21,996 copies a few hours prior to the end of the tracking week ending on February 25, 2016, posting a 4777% gain from its previous week and allowing it to debut on the Billboard Digital Songs chart at number 35 and at number 18 on the Billboard Bubbling Under Hot 100 Singles chart in the issue dated the week ending March 12, 2016. The following week, "Piece by Piece" made its debut Billboard Hot 100 chart at number eight, becoming Clarkson's eleventh Hot 100 top ten hit on the chart and tied itself with "Never Again" (2007) as her highest entry position on the chart. It also became her first song to reach the top 10 in since "Stronger (What Doesn't Kill You)" reached number one in 2012. It also ascended to the top position on the Billboard Digital Songs chart and Pop Digital Songs chart with 210,000 digital copies sold and 3.1 million streaming activity, posting an 852% digital surge and 969% streaming gain while also becoming her 100th number-one hit on the Billboard charts. In addition, the song re-entered the Billboard Adult Top 40 chart at number 33 and debuted on the Billboard Adult Contemporary chart at number 23. "Piece by Piece" peaked at number nine on the Adult Pop chart, becoming Clarkson's fifteenth top-10 hit on the chart and set a record for the female artist with the most top-10s on the chart. Internationally, "Piece by Piece" debuted on the Billboard Canadian Hot 100 at number 17, on the Official UK Singles Chart at number 95, with an entry at number 37 on the UK Top Sales Chart, and on the ARIA Singles Chart at number 24. Following a performance of "Piece by Piece" by Rebecca Grace on The X Factor, the song re-entered the Official UK Singles Chart at number 27, attaining a new peak position.

Example Output: b

Example Input: Question: Did the Phillies win the league championship the year that Roberts won 20 games? Passage:Of those Phillies, 97 have had surnames beginning with the letter R. Two of those players have been inducted into the Baseball Hall of Fame: pitcher Eppa Rixey, who was a Phillie for six seasons in two different stints (1912–1917, 1919); and Robin Roberts, who won 20 games during the 1950 season as the ace pitcher of the Whiz Kids. The Hall of Fame lists the Phillies as Roberts' primary team; during his career, the right-hander won 234 games and lost 199, the latter one of his three franchise records. During his 14 seasons with the team, he pitched 3,739  innings and completed 272 games, both records; he also held the major league record for most career home runs allowed until it was broken in 2010. Roberts was also elected to the Philadelphia Baseball Wall of Fame as the Phillies' first inductee in 1978.

Example Output:
b