Teacher:You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.
Teacher: Now, understand the problem? Solve this instance: Television was invented by John Logie Baird in the 1920s, but he used ideas from scientists in late 19th century. Henri Becquerel found that light could be changed into electricity and, importantly, Ferdinand Braun had invented the cathode ray tube.
Student:
Who invented TV?