The task is to identify if a given passage or sentence has proper punctuation. This includes proper capitalization and the use of punctuations such as commas, semi-colons and full-stops. The answer is True if all punctuation is properly applied, else the answer is False.

which would indicate that the bullet was not fired from the Mannlicher-Carcano rifle owned by Lee Harvey Oswald.
False

The chest was opened to give change, and a heavy tray lifted out which plainly held some £4000 in cash.
True

At last he decided to enlist one Tester, a clerk in the traffic department, whom he thought would prove a likely tool.

True