def METHOD_NAME(data_source):
    data = []
    with open(data_source, "r", encoding="utf-8") as f:
        rdr = csv.reader(f, delimiter=",", quotechar='"')
        for row in rdr:
            txt = ""
            for s in row[1:]:
                txt = txt + " " + re.sub("^\s*(.-)\s*$", "%1", s).replace("\\n", "\n")
            data.append((row[0], txt))  # format: (label, text)
    return data