def determine(userChoice, computerChoice):
    """
        This function takes in two arguments userChoice and computerChoice,
        then determines and returns that who wins.
    """
    if(userChoice == "Rock" and computerChoice == "Paper"):
        return "computer"
    elif(userChoice == "Rock" and computerChoice == "Scissors"):
        return "user"
    elif(userChoice == "Paper" and computerChoice == "Rock"):
        return "user"
    elif(userChoice == "Paper" and computerChoice == "Scissors"):
        return "computer"
    elif(userChoice == "Scissors" and computerChoice == "Paper"):
        return "user"
    elif(userChoice == "Scissors" and computerChoice == "Rock"):
        return "computer"
    else:
        return "tie"