import random


def selector(input_list, check_list, return_list):
    """ Repeat input several times.
   
    Parameters
    ----------
    input_list : list
        List that contains a list of input.
    
    check_list : list
        List that checks whether input contains certain items.
    
    return_list : list
        List contains items that will be drawn randomly.
        
    Returns
    -------
    output : string
        String to display the result of a random choice in a list given certain conditions met.
   """
    
    
    output = None
    for item in input_list:
        if item in check_list:
            output = random.choice(return_list)
            break
    return output