ผู้ผลิตรายไหนมีปีที่ผลิต 4-6-0 •ooooo •สิบล้อ?
Which manufacturer has a year made of 4-6-0 — ooooo — ten-wheeler?
df = pd.DataFrame(columns=["manufacturer", "year_made"])
df[df['year_made'] == '4-6-0 — ooooo — ten-wheeler']['manufacturer']