You will be given a definition of a task first, then some input of the task.
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.

Question: When was the man who was a commander for the Russo-Turkish War born? Passage:In 1625, at Lake Kurukove in Kremenchuk, the Treaty of Kurukove was signed between the Cossacks and the Poles. Since the establishment of Cossack Hetmanate, the city was part of the Chyhyryn Polk (regiment). Following the Russo-Polish War (16541667) and Treaty of Andrusovo, the city was secured by Tsardom of Russia and became part of the Myrhorod Polk (regiment) within the left-bank Cossack Hetmanate. The city played a key role of the Russian colonization policy of Ukraine and their strive for the shores of Black Seas as regional administrative center of the early Novorossiya Governorate and Yekaterinoslav Vice-regency (Namestnichestvo). With creation of Novorossiya Governorate, in Kremenchuk was created Dnieper Pikers Regiment and coincidentally few years later (176869) in the neighboring regions of Poland started out so called Koliyivshchyna (literally the Piker's unrest). Here in 1786 started his military career the Russian general Alexander Suvorov when he was appointed a commander the local garrison (in preparation of the 17871792 Russo-Turkish War).

Output:
b