Conversation so far:
Where was Lillian Moller Gilbreth born?
Lillie Evelyn Moller was born in Oakland, California.
What year was Lillian Moller Gilbreth born?
Lillie Evelyn Moller was born on May 24, 1878.

Question: Who were her parents?
Self-contained rewrite: Who were Lillian Moller Gilbreth's parents?