Text: what is harder to see or suspect is that a third party existed and actively promoted the quarrel.

Correct capitalization: What is harder to see or suspect is that a Third Party existed and actively promoted the quarrel.

Text: the melbourne cup is usually attended by over 100,000 people, some dressed up in formal attire, others wearing fancy dress or comedy costumes of another kind. the record attendance was 122,736 in 2003.

Correct capitalization: The Melbourne Cup is usually attended by over 100,000 people, some dressed up in formal attire, others wearing fancy dress or comedy costumes of another kind. The record attendance was 122,736 in 2003.

Text: subclasses in class reminder.accountingsupplierparty

Correct capitalization: Subclasses in class Reminder.AccountingSupplierParty

Text: he stands on a mountain and sees a ghetto that the germans are about to destroy.

Correct capitalization:
He stands on a mountain and sees a ghetto that the Germans are about to destroy.