Conversation so far:
What happened at the inauguration?
McKinley was sworn in as president on March 4, 1897, as his wife and mother looked on.
Did anything significant happen at the inauguration?
The new President gave a lengthy inaugural address.
Was it well received?
CANNOTANSWER.

Question: When was the inauguration?
Self-contained rewrite: When was the presidential inauguration for McKinley?