Conversation so far:
Has Rosa ever performed overseas?
Outside the USA, Ponselle sang only at Covent Garden in London (for three seasons) and in Italy.
What year did she begin to perform in London?
In 1929, Ponselle made her European debut in London.
When did she finish her career?
on April 22, 1937.

Question: What did she perform later in her career?
Self-contained rewrite: What did Rosa Ponselle perform later in her career?