Task: Text Completion
Input (English): Prompt: In old times, people thought that the Earth was flat. It is because 
Completion A: the Earth is actually flat. 
Completion B: they were misinformed. 
Completion C: they have not been to the other side of the planet. 
Completion D: although the Earth is spherical, in five dimensional hyperspace the Earth is flat.
Output (English): Completion B