What is the question "Who invented the process to make condensed milk ?" asking about?
A: human

What is the question "What were the first three cities to have a population of more than a million ?" asking about?
A: location

What is the question "What kinds of animals are in Cambodia ?" asking about?
A: entity

What is the question "What are the 28 tenses in the English language ?" asking about?
A:
entity