def standardize_survey_list(row):
    """This function takes in a list for a given row of a survey result and will
    lower-case it and strip out white space from left and right of the string.

    Args:
        row (list): A list of survey results

    Returns:
        list: standardized survey results
    """
    # lowers all strings and strips whitespace
    clean_row = [x.lower().strip() for x in row]
    return list(set(clean_row))