def validate_annotations(x: str) -> str:
    """Validate Angry Tweets Annotations 

    Helper function. If a text is annotated with different labels, 
    replace with 'skip'. 

    Args:
        x (str): Annotation.

    Returns:
        str: Adjusted annotation, single value.
    """
    x = eval(x)
    if len(set(x)) == 2:
        x == ['skip']
    return x[0]