def full_overlap(aIntervalA, aIntervalB):
    """ Returns True if interval A falls completely within interval B otherwise returns False"""
    # Check that both inputs are 3-column intervals
    if not len(aIntervalA) == len(aIntervalB) == 3:
        raise Exception("Regions could not be overlapped")
    if aIntervalA[0] == aIntervalB[0]:
        if aIntervalA[1] >= aIntervalB[1]:
            if aIntervalA[2] <= aIntervalB[2]:
                return True
    else:
        return False