Table:
text: Zhao Dan
Selected filmography
As actor
Year_ English_Title Chinese_Title Director Role_
1933 Twenty-Four Hours in Shanghai 上海二十四小时 Shen Xiling 
1937 Street Angel 马路天使 Yuan Muzhi Xiao Chen
1937 Crossroads 十字街头 Shen Xiling Zhao
1947 Far Away Love 遙遠的愛 Chen Liting Xiao Yuanxi
1947 Rhapsody of Happiness 幸福狂想曲 Chen Liting 
1949 Crows and Sparrows 烏鴉与麻雀 Zheng Junli Little Broadcast
1949 Women Side by Side 丽人行 Chen Liting Zhang Yuliang
1950 The Life of Wu Xun 武训传 Sun Yu Wu Xun
1951 The Married Couple 我们夫妇之间 Zheng Junli 
1956 Li Shizhen 李时珍 Shen Fu Li Shizhen
1958 Lin Zexu 林则徐 Zheng Junli Lin Zexu
1959 Nie Er 聂耳 Zheng Junli Nie Er

Question: From Zhao Dan's list, how many films did Zhao Dan star in before 1949?

Question: How long has Zhao Dan starred in films?

Question: What other film was Zhao Dan in the year he starred in Street Angle?

Question: After Crossroads, what was the next movie Zhao Dan starred in for Zhao Dan?

Question: What was the first movie Zhao Dan starred in?

Question: What is the difference in years between his last role and his first role for Zhao Dan?

Question: In which movie did Zhao Dan play after he was in Lin Zexu?

Question: In how many films did Zhao Dan act between 1930 and 1940?