instruction:
In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting string. 'i' and 'j' will be non-negative, and will always have a value less than the length of A. 'i' will always be less than 'j'. Perform the operations in order, i.e., do not reverse first and then concatenate.
question:
2, 2, ['1467', 'm']
answer:
m


question:
3, 3, ['x', 'v', 'p', '4337', '635', '8927', 'B']
answer:
p


question:
14, 15, ['9459', 'Y', '5509', 'B', '1063', 'f', 'P', '4805', 'u', 'c', '4219', 'F', 'U', '1447', 'e', 'v', '9787', '349', 'z', 'N', 'Q']
answer:

e7441