{"answers": "C", "options": ["f : i also think it is exciting to find life elsewhere , let us go to school and tell our teachers .", "f : since you are a scientist , why do you think it is impossible to find life elsewhere ?", "f : it is interesting that you think it is impossible to find life elsewhere in the universe .", "f : why do you think it is easy to find life elsewhere , since you are my best teacher in school ."], "article": "f : how do you know how old a star is ? m : for most stars , we find its age from how big it is . we can know its size from the amount of light it puts out and its color . then the size tells us how long a star will live . big stars live a short life , while small stars live much longer . f : i 've always wondered if there is an end in space . do you think scientists have found the answer ? m : this is a difficult question . the truth is that we have no idea . we currently do n't have a way of testing it . but some scientists will come up with a way in the future . i have faith in it . f : the last question is from our readers . do you believe there is other life in different parts of the universe ? m : there are so many planets in the universe . life may exist on other planets , but will we ever find or research them ? i think that 's very unlikely .", "id": "train_3060"}