question: article about discoveries of ancient human footprints hundreds of thousands of years old, new mexico, jerry macdonald, permian period, pliocene period
Capitalize this past sentence correctly.
A: article about discoveries of ancient human footprints hundreds of thousands of years old, New Mexico, Jerry MacDonald, Permian period, Pliocene Period

question: putin & i discussed forming an impenetrable cyber security unit so that election hacking, & many other negative things, will be guarded..
Capitalize this past sentence correctly.
A: Putin & I discussed forming an impenetrable Cyber Security unit so that election hacking, & many other negative things, will be guarded..

question: the result was an, in the context of history, so far exceptional murder of millions.
Capitalize this past sentence correctly.
A: The result was an, in the context of history, so far exceptional murder of millions.