In 'Raiders of the Lost Ark', what artifact is Indiana Jones seeking?

Ark of the Covenant

In which animated film does Robin Williams voice two minor characters named Fender and Lovelace? What's the main character's name in the original 'Half-Life' series? In athletics, how many events are in a decathlon? What US city is known for the iconic Golden Gate Bridge? Who founded the Mormon religion, later migrating with followers to Illinois?