Menpenti Quartier มีกี่คนในช่วงอายุ 40-59 ปี?
the quartier menpenti has how many 40-59 year olds?
df = pd.DataFrame(columns=['_percentage_40_59_years', 'quartier'])
df[df['quartier'] == 'Menpenti']['_percentage_40_59_years']