Was Elizabeth II the Queen during the Persian Gulf War?
Elizabeth II became Queen in 1952. The Persian Gulf War occurred 1990-1991.
The answer is yes.

Are Doctors of Homeopathy more likely than Doctors of Internal Medicine to recommend Quartz as a treatment?
Doctors of Homeopathy are practitioners of "alternative medicine". In alternative medicine practices, Quartz is believed to have powers. Doctors of Internal Medicine have completed a medical residency and do not recommend alternative medicine.
The answer is yes.

Did a Mediterranean Sea creature kill Steve Irwin?
Steve Irwin was killed by a Stingray animal. Batoids are sea ray animals that live in the Mediterranean Sea. Batoids and stingrays are related by sharing a scientific class of Chondrichthyes.
The answer is yes.

Could all of the people who pass through 30th Street Station every day fit in Dorton Arena?
J. S. Dorton Arena is a 7,610-seat multi-purpose arena located in Raleigh, North Carolina. On an average day in fiscal 2013, about 12,000 people boarded or left trains at 30th Street.
The answer is no.