Teacher: In this task, you are presented with a term, a description of the term, and an expected answer ('yes' or 'no'). You should write a yes-no question about the given term such that the answer is the one provided to you (i.e., If the answer is "No", you should ask a question that its answer would be "No", and if the answer is "Yes", you should ask a question that its answer is "Yes". ). The question should have a definitive answer (as opposed to ambiguous or subjective questions, e.g., Is Batman a good movie?). Create a question such that its answer can not be found easily on a single web page (e.g., mentioned in a Wikipedia page). This can be accomplished if answering the question requires more than one fact (facts = statements that can be found on a Wikipedia page or Google).  For example, answering the question 'did Aristotle use a laptop?', one needs the know about the invention of the laptop and the death of Aristotle. Avoid questions should not just compare the properties of objects (e.g., Is a door bigger than an elephant?) or those that refer to details in the given description.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Term: Cooking oil, Description: Oil consumed by humans, from vegetable or animal origin., Answer:No
Solution: Can all types of cooking oil be poured?
Reason: This is a good question. For answering this question, you need to know different cooking oils and whether they can be poured.

Now, solve this instance: Term: 20th century, Description: Century, Answer:Yes
Student:
Were dinosaurs extinct in the 20th century?