A pronoun is a word that takes the place of a noun. Examples: he, she, it, they, someone, who. Pronouns can do all of the things that nouns can do. They can be subjects, direct objects, indirect objects, object of the preposition, and more. Heck, the word pronoun even has the word noun in it! Let's look at a few examples. Erik Weihenmayer is a blind mountain climber.
On October 1, 1945, Project RAND was set up under special contract to the Douglas Aircraft Company and began operations in December 1945, expending a total of $640 in its first month of operation.
Edison and Batchelor instruct John Ott to make the first run of electric pens: 10 pens same as model by hand to be delivered to the laboratory by September 17th 1875; to then make tooling for manufacture of the pens, and to deliver 100 production pens by October 13th.