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: Smith was annealing.

SOLUTION: acceptable

PROBLEM: He has danced.

SOLUTION: acceptable

PROBLEM: How did he eat the food?

SOLUTION:
acceptable