Question: 
Write a function to extract every first or specified element from a given two-dimensional list.


Model's Code:
def specified_element(lst, index):
    return [row[index] for row in lst]



Sample Correct Code:
def specified_element(nums, N):
    result = [i[N] for i in nums]
    return result
    


Asserts:
assert specified_element([[1, 2, 3, 2], [4, 5, 6, 2], [7, 1, 9, 5]],0)==[1, 4, 7]
assert specified_element([[1, 2, 3, 2], [4, 5, 6, 2], [7, 1, 9, 5]],2)==[3, 6, 9]
assert specified_element([[1, 2, 3, 2], [4, 5, 6, 2], [7, 1, 9, 5]],1)==[2,5,1]


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 49 of 974: 36/49 (73.46938775510205%): success