code: def comp(p, q):
      if p is None and q is None:
          return True
      if p is not None and q is not None:
          return (
              p.val == q.val
              and comp(p.left, q.left)
              and comp(p.right, q.right)
          )
      return False
  
label_desc: Use image node_id 2 for calling a global function with example usage: comp(p, q) and returns: False, True, unknown