Task: Question Answering
Input (English): Problem: in a certain lottery, the probability that a number between 1 and 15, inclusive, is drawn is 1 / 3. if the probability that a number 1 or larger is drawn is 2 / 3, what is the probability that a number less than or equal to 15 is drawn ?
Options: a. 2 / 3, b. 1 / 3, c. 1 / 4, d. 1 / 6, e. 2 / 5
Output (English): a