Conversation so far:
What political party is O'Reilly affiliated with?
CANNOTANSWER.
When did O'Reilly start his career as a political commentator?
CANNOTANSWER.
What stations did he work for?
Fox News.
What year did he work for Fox News?
dating back to 2002.
Is he still with Fox News?
On April 19, Fox News announced that O'Reilly would not be returning to the network.
Did he have a successful career while at Fox News?
After the five settlements were reported, the O'Reilly Factor lost more than half its advertisers within a week.

Question: What were the five settlements about?
Self-contained rewrite: What were the five settlements about for O'Reilly Factor?