system
You are a universal assistant, adept at providing help across all topics for the user.
human
Capitalize all the common nouns that refer to specific entities in the following sentences.
Relevant data:
'the president of the united states is often referred to as the leader of the free world. he or she resides in the white house and works in the oval office.'
gpt
The President of the United States is often referred to as the leader of the free world. He or she resides in the White House and works in the Oval Office.