def segment_basic_score(y_true_seg, y_pred_seg):
    """
    Compares y_true_seg with y_pred_seg and returns the corresponding label
    
    :param y_true_seg: true value of segment
    :param y_pred_seg: predicted value of segment
    :return: label that indicates True Positive, True Negative, False Positive or False Negative.
    Possible outcomes: "TP", "TN", "FP", or "FN".
    """
    true_vs_pred = {(True, True): 'TP', (True, False): 'FN', (False, True):
        'FP', (False, False): 'TN'}
    return true_vs_pred[y_true_seg, y_pred_seg]
