( ( To ( ( predict ( ( maximum range ) ( of ( a ( projectile device ) ) ) ) ) ( at ( various angles ) ) ) ) . )
(ROOT (S (VP (TO To) (VP (VB predict) (NP (NP (JJ maximum) (NN range)) (PP (IN of) (NP (DT a) (JJ projectile) (NN device)))) (PP (IN at) (NP (JJ various) (NNS angles))))) (. .)))
To predict maximum range of a projectile device at various angles.
(ROOT (S (NP (NNP Range)) (VP (VBZ is) (NP (NP (DT the) (JJ maximum) (JJ horizontal) (NN distance)) (VP (VBN traveled) (PP (IN by) (NP (DT a) (NN projectile)))))) (. .)))
Range is the maximum horizontal distance traveled by a projectile.