def filter_true(argument):
    """
    Return the predicate value of given item and the item itself.

    :param tuple argument: Argument consists of predicate function and item
                           iteself.

    >>> filter_true((lambda x: x <= 5, 5))
    ... True, 5
    >>> filter_true((lambda x: x > 100, 1)
    ... False, 1
    """
    predicate, item = argument
    return bool(predicate(item)), item