{"answers": " ", "options": ["f : well , i think it 's easy to find different rocks on the beach , because it gets hot during the day and the rocks ' color will change into red .", "f : well , i think the few plants there is the main reason you can find different rocks easily .", "f : i think because there are many different rocks on the beach so you can find them without any difficulties .", "f : alright , i think the few plants there is the main reason you can find different rocks easily in forest , but i think in a forest , there are usually many plants there ."], "article": "f : john i did n't see you in the english class on friday . m : i was n't here on friday . my geography class went to a field trip to look at some of the different rocks . in fact , we slept there last night . f : wow sounds interesting . where did you go ? m : a desert . it gets hot during the day but it cools off very quickly at night . f : well . what do you think of the trip ? m : i enjoyed it very much although it is very dry . the desert is indeed a wonderful place . i thought of nothing but vastness when i got there . since you can hardly see plants . it 's very easy to find different rocks there .", "id": "test_61"}