( Fermat ( also ( ( stated ( that ( Light ( follows ( ( a path ) ( that ( minimizes ( total ( travel time ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Fermat)) (ADVP (RB also)) (VP (VBD stated) (SBAR (IN that) (S (NP (NNP Light)) (VP (VBZ follows) (NP (NP (DT a) (NN path)) (SBAR (WHNP (WDT that)) (S (VP (VBZ minimizes) (NP (JJ total) (NN travel) (NN time)))))))))) (. .)))
Fermat also stated that Light follows a path that minimizes total travel time .
(ROOT (S (NP (NP (NNP Fermat) (POS 's)) (NN principle)) (VP (VBZ states) (SBAR (IN that) (S (NP (NN light)) (VP (MD will) (ADVP (RB always)) (VP (VB take) (NP (NP (DT the) (NN path)) (PP (IN of) (NP (NP (DT the) (JJS least) (NN amount)) (PP (IN of) (NP (NN time))))))))))) (. .)))