<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def are_token_parallel(sequences: Sequence[Sized]) -> bool: """ Returns True if all sequences in the list have the same length. """

    if not sequences or len(sequences) == 1:
        return True
    return all(len(s) == len(sequences[0]) for s in sequences)