Does the sentence "Meanwhile, a cargo train carrying 13 petrol tanks derailed in Hui County, Gansu, and caught on fire after the rail was distorted." provide a valid answer to the question "Where did a cargo train derail as a result?"

A: yes

Does the sentence "The site grew rapidly, and in July 2006 the company announced that more than 65,000 new videos were being uploaded every day, and that the site was receiving 100 million video views per day." provide a valid answer to the question "when was the first beta test for the youtube site?"

A: no

Does the sentence "While the times of sunrise and sunset change at roughly equal rates as the seasons change, proponents of Daylight Saving Time argue that most people prefer a greater increase in daylight hours after the typical "nine-to-five" workday." provide a valid answer to the question "What word describes the approximate rates at which sunset and sunrise change with the seasons?"

A: yes

Does the sentence "Native Americans suffered high mortality rates due to their lack of prior exposure to these diseases." provide a valid answer to the question "Why did Native Americans suffer such high mortality rates to the diseases?"

A:
yes