def neg_query_segment(phrase_list):
    """
        Given a list of phrases, returns a string of all the phrases negated.
        e.g. -"but" -"because" -"however"
        Args:
            phrase_list: a list of phrases (e.g. reasoning/experience
                         indicators)
        Returns:
            result_string: a string of all phrases AND'd together ready for a
                           search engine.
    """
    result_string = ""

    for phrase in phrase_list:
        result_string += '-"' + phrase + '" '

    return result_string