Definition: 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.
Input: Question: Who was James Dobson married to the year Henry Dobson died? Passage:He was born at Plymouth, the eldest son of George Clarisse Dobson, a civil engineer, of French descent. When he was about eight, the family moved to Holyhead, and his first school was at Beaumaris in Anglesey. He was later educated at Coventry, and the Gymnase, Strasbourg. He returned at the age of sixteen with the intention of becoming a civil engineer. (His younger brother James would in fact become a noted engineer, helping complete the Buenos Aires harbour works in the 1880s and 1890s.) At the beginning of his career, he continued to study at the South Kensington School of Art, in his spare time, but without definite ambition. In December 1856 he entered the Board of Trade, gradually rising to the rank of principal in the harbour department, from which he retired in the autumn of 1901. In 1868, he had married Frances Mary, daughter of the distinguished civil engineer Nathaniel Beardmore (1816–1872) of Broxbourne, Hertfordshire, and settled at Ealing. Dobson died in 1921 and his funeral was held on 6 September at St Peter's Church, Ealing. He is buried in the Westminster Cemetery, Uxbridge Rd, Hanwell, Middlesex.


a