Premise: He had taken a nap and overslept , and here he was , right in the hen-house , in broad daylight .<br>`` It must have been a Skunk , '' said Farmer Brown 's boy , `` and if it was , he must have left some tracks in the snow outside .<br>I 'll just look around a bit . ''<br>Unc ' Billy almost chuckled as he heard Farmer Brown 's boy go out .<br>`` He 'll find Jimmy Skunk 's tracks , but he wo n't find mine , '' thought Unc ' Billy .<br>`` Is n't it lucky that I thought to step right in Jimmy Skunk 's tracks when I came here ? ''<br>He lay still and listened to Farmer Brown 's boy poking around outside .
Hypothesis: Unc ' Billy did not leave his own tracks.