สโมสร UNAM เล่นฤดูกาลแรกในดิวิชั่นสูงสุดเมื่อใด?
When did the club UNAM played the first season in top division?
df = pd.DataFrame(columns=['first_season_in_top_division', 'club'])
df[df['club'] == 'UNAM']['first_season_in_top_division']