question: these devices have been developed by various authors: w krull , who introduced the fundamental notion of a local ring, o zariski , i cohen, p samuel, and c chevalley .
Capitalize this past sentence correctly.
A: These devices have been developed by various authors: W Krull , who introduced the fundamental notion of a local ring, O Zariski , I Cohen, P Samuel, and C Chevalley .

question: tired of the sales gas so check out our references out at the bottom of the page and there is more where they come from.
Capitalize this past sentence correctly.
A: Tired of the sales gas so check out our references out at the bottom of the page and there is more where they come from.

question: hess: death, who fetches the nobleman has been provided with a fantastic moustache.
Capitalize this past sentence correctly.
A: Hess: Death, who fetches the nobleman has been provided with a fantastic moustache.