can take the grandkids or the grandparents and 
(ROOT (SQ (MD can) (VP (VP (VB take) (NP (NP (DT the) (NNS grandkids)) (CC or) (NP (DT the) (NNS grandparents)))) (CC and))))
(ROOT (SQ (MD ) (VP (VP (VB ) (NP (NP (DT ) (NNS )) (CC ) (NP (DT ) (NNS )))) (CC ))))