Two men attaching a machine to a pair of horses can not be riding horses while a dirt field can not include a field of grass.


Context: Two men, both wearing hats, are attaching a red threshing machine to a pair of horses who are facing to the left, while they are all in a dirt field.
Hypothesis: Two men are riding horses through a large field of grass.

Is the hypothesis incorrect? (Yes, no, or unknown)?