we have tickets waiting for us
( we ( have ( tickets ( waiting ( for us ) ) ) ) )
(ROOT (S (NP (PRP we)) (VP (VBP have) (NP (NP (NNS tickets)) (VP (VBG waiting) (PP (IN for) (NP (PRP us))))))))
We have tickets to the Browns waiting for us.
( We ( ( ( ( have tickets ) ( to ( the Browns ) ) ) ( waiting ( for us ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP have) (NP (NNS tickets)) (PP (TO to) (NP (DT the) (NNPS Browns))) (S (VP (VBG waiting) (PP (IN for) (NP (PRP us)))))) (. .)))