Trees are semi-deciduous with broad and rigid leaves and thick bark that allows them to survive frequent savanna fires (Eiten, 1972).
(Trees; are; semi-deciduous with broad and rigid leaves and thick bark) (thick bark; allows; them to survive frequent savanna fires) Context(thick bark allows,List([57, 79))):(them; to survive; frequent savanna fires)
thick bark allows,List([57, 79))
Trees thick bark them
are allows to survive
semi-deciduous with broad and rigid leaves and thick bark
them to survive frequent savanna fires
frequent savanna fires