this is a tree
this is a stop sign
this is a signpost 
a STOP sign on a pole
a tree behind a sign
branches of tree behind STOP sign
green leaves on trees
a red sign with white borders
a sign with white letters
a sign beside a tree
a sign for the public
a sign with a funny phrase
a sign on a sunny day 
a sign in the shade of a tree
a stop sign 
a red sign
a traffic sign 
a red stop sign with stickers on it under a tree