問題 1:
In which city was the artist Ruan Zude born?
問題 2:
What is the birth year of Ruan Zude according to the verified database facts?
問題 3:
Which museum holds the artwork 'Portrait of the wife of Yizhai'?
問題 4:
What medium was used for the painting 'Portrait of the artist’s great-granduncle Yizhai at the age of eighty-five'?
問題 5:
According to the artist's inscription, for which occasion was the portrait of Yizhai painted?
