Earth to Marvin.
( ( Earth ( to Marvin ) ) . )
(ROOT (NP (NP (NNP Earth)) (PP (TO to) (NP (NNP Marvin))) (. .)))
Mars to Marvin.
( ( Mars ( to Marvin ) ) . )
(ROOT (NP (NP (NNP Mars)) (PP (TO to) (NP (NNP Marvin))) (. .)))