instruction:
In this task, you need to answer basic science questions. For each question, several terms are intentionally masked with ***. This masking can cover very few or many of the question words. Clearly, if masked terms are important, the modified question will be impossible to answer. Please indicate the correct answer with one of the following responses: "A", "B", "C", "D" or "E". While "A"-"D" correspond to the answer options provided in the input, "E" represents "I don't know" for questions that do not provide enough information. Respond via "E" if the question is not answerable. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D', 'E'.
question:
Question: Andy lives in the southern ***. What *** does he most likely *** in August?  (A) spring (B) summer (C) winter (D) autum.
answer:
E.


question:
Question: The *** *** *** VERY slowly through creep, which is __________.  (A) a slow erosion due to glacial movements over land (B) the slow movement of lava flows during a volcanic eruption (C) soil moving slowly downhill due to gravity (D) the slow process of wind weathering landform.
answer:
E.


question:
Question: The *** of the *** *** which of the following to *** ***?  (A) the discovery of cells (B) the identification of weather patterns (C) detailed observation of planets (D) communication between distant citie.
answer:

E.