Given a scientific passage and an answer, generate a question for the given answer.

Input: Consider Input: Passage: The protist kingdom is sometimes called the "trash can" kingdom. It includes all eukaryotes that don't fit in one of the other three eukaryote kingdoms: Animalia, Plantae, or Fungi. There are thought to be between 60,000 and 200,000 protist species. Many have yet to be identified. The protist kingdom is very diverse, as shown in Figure below . Answer: trash can kingdom

Output: What is the protist kingdom sometimes called as?

Input: Consider Input: Passage: Matter can be classified as transparent, translucent, or opaque depending on how it interacts with light. Answer: opaque

Output: Depending on how matter interacts with light, it can be classified as transparent, translucent, or what?

Input: Consider Input: Passage: Disposing of industrial waste is one way that human actions pollute the land. This became clear more than 30 years ago in Love Canal, a neighborhood in Niagara Falls, New York. Love Canal may sound lovely, but it is not. Love Canal was and is a disaster. Love Canal been called one of the worst environmental disasters of all time. Answer: industrial waste dumping
Output: Love canal was an infamous example of what type of pollution?