def get_sentiment_of_emotions(emotion):
    """
    Utility function to get the POS/NEG categorization of an emotion
    :param emotion: emotion to be processed
    :return: POS, NEG category
    """
    POS = ['joy', 'trust', 'anticipation', 'surprise']
    NEG = ['sad', 'fear', 'disgust', 'anger', 'hopelessness', 'loneliness', 'distress']

    if emotion in POS:
        return 'POS'
    elif emotion in NEG:
        return 'NEG'
    else:
        return None