S NP VP
S X1 VP
X1 Aux NP
S book
S include
S prefer
S Verb NP
S X2 PP
S Verb PP
S VP PP
NP I
NP she
NP me
NP TWA
NP Houston
NP Det Nominal
Nominal book
Nominal flight
Nominal meal
Nominal money
Nominal Nominal Noun
Nominal Nominal PP
VP book
VP include
VP prefer
VP Verb NP
VP X2 PP
X2 Verb NP
VP Verb PP
VP VP PP
PP Preposition NP