( ( The balloon ) ( ( will ( ( expand ( to ( full volume ) ) ) ( with ( increasing altitude ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN balloon)) (VP (MD will) (VP (VB expand) (PP (TO to) (NP (JJ full) (NN volume))) (PP (IN with) (NP (VBG increasing) (NN altitude))))) (. .)))
The balloon will expand to full volume with increasing altitude.
(ROOT (S (PP (IN From) (NP (NP (NNS observations)) (ADJP (RB as) (JJ simple) (PP (IN as) (S (VP (VBG blowing) (PRT (RP up)) (NP (DT a) (NN balloon)))))))) (, ,) (NP (PRP it)) (VP (VBZ is) (ADJP (JJ clear)) (SBAR (IN that) (S (S (VP (VBG increasing) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN gas)))))) (VP (VBZ increases) (NP (DT the) (NN volume)))))) (. .)))