TASK DEFINITION: You're given a sentence and your task is to classify whether the sentence is acceptable or not. Any sentence which is grammatically correct, has a naturalistic text, is written by a native speaker and which minimizes superfluous content is acceptable, otherwise unacceptable. If the sentence is acceptable then write "acceptable", otherwise "unacceptable".
PROBLEM: I've never seen the one man taller than my father.

SOLUTION: acceptable

PROBLEM: That the march should go ahead and that it should be cancelled have been argued by different people at different times.

SOLUTION: acceptable

PROBLEM: The present king of country music is more popular than the last one.

SOLUTION:
acceptable