Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').

Input: Consider Input: Neutrinos are particles with almost ____ mass and no electric charge.\Question: Choose the right answer from options given a) no b) two c) zero d) five

Output: a


Input: Consider Input: Japan is a highly urbanised country, with approximately three in every ____ people living in cities.\Question: Choose the right answer from options given a) seven b) two c) four d) eight

Output: c


Input: Consider Input: American women are ____ times more likely to die from breast cancer than Japanese women.\Question: Choose the right answer from options given a) four b) five c) seven d) six


Output: a