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: How old was David Jewett Waller Sr. when his son David was born? Passage:Waller was born on July 17, 1846. His parents were David Jewett Waller Sr. and Julia Ellmaker Waller. He was their fifth child. When young he was educated at Bloomsburg. After that he went to a classical school in a local Primitive Methodist Episcopal Church. When Waller was fourteen he was sent to a school run by Revered Gayley in the community of Media. In 1861, at the age of 15, he went to Williams College's preparatory department. However, due to sickness his education ceased for three years. In 1867, he was among the first people to graduate from the Bloomsburg Literary Institute. Waller went to Lafayette College in the autumn of 1867. He did well there and graduated from there with a Bachelor of Arts degree in 1870 and a Master of Arts degree in 1873. From 1870 to 1871 he trained to be and served as a tutor in Latin and Greek. While at Lafayette College he also won the Fowler Prize, a prize of $30 granted for excellence in English philology. Waller attended the Princeton Theological Seminary from 1871 to 1872, then switched to the Union Theological Seminary and graduated from that in 1874. He received an honorary Ph.D from Lafayette College in 1880 and received a Doctor of Divinity degree from Ursinus College in 1892. Juniata College granted Waller an honorary Doctor of Laws degree in 1934.

Output:
b