The chapter entitled The Making of a President which is obviously not fiction makes this almost unreadable novel a historical document of the first importance

Can you repeat this sentence, but add in punctuation?
The chapter entitled "The Making of a President," which is obviously not fiction, makes this almost unreadable novel a historical document of the first importance.
It should not be shared with other children even if they have similar symptoms

Can you repeat this sentence, but add in punctuation?
It should not be shared with other children, even if they have similar symptoms.
Running is one of the best forms of exercises for burning off calories It is also one of the cheapest sports however good running shoes are a must

Can you repeat this sentence, but add in punctuation?
Running is one of the best forms of exercises for burning off calories. It is also one of the cheapest sports - however, good running shoes are a must.