1) Mozart and Beethoven/design/machines? (✗ compose music)
— Did Mozart and Beethoven design machines?
— No, the didn't design machines. They composed music.
2) Sir Alexander Fleming/discover/penicillin? (✓)
— Did Sir Alexander Fleming discover penicillin?
— Yes, Sir Alexander Fleming discovered penicillin.
3) Thomas Edison/study/plants? (✗ invent/the light bulb)
— Did Thomas Edison study plants?
— No, Thomas Edison didn't study plants. He invented the light bulb.
4) The Wright brothers/invent/the first modern aeroplane? (✓)
— Did The Wright brothers invent the first modern aeroplane?
— Yes, the Wright brothers invented the first modern aeroplane.