Task: Question Answering
Input (English): Problem: an empty wooden vessel weighs 8 % of its total weight when filled with paint. if the weight of a partially filled vessel is one half that of a completely filled vessel, what fraction of the vessel is filled.
Options: a. 3 / 7, b. 5 / 9, c. 1 / 24, d. 4 / 9, e. 2 / 5
Output (English): a