Answer:
def get_middle_ten(sentence):
ind = (len(sentence) - 12) // 2
return sentence[ind:ind + 12]
# Testing the function here. ignore/remove the code below if not required
print(get_middle_twelve("abcdefghijkl"))
print(get_middle_twelve("abcdefghijklmnopqr"))
print(get_middle_twelve("abcdefghijklmnopqrst"))
