( ( ( Some species ) ( of spider ) ) ( ( are ( able ( to ( ( live underwater ) ( by ( ( ( carrying ( an ( air supply ) ) ) ( with them ) ) ( in ( ( the form ) ( of ( ( a bubble ) ( of air ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT Some) (NN species)) (PP (IN of) (NP (NN spider)))) (VP (VBP are) (ADJP (JJ able) (S (VP (TO to) (VP (VB live) (NP (JJ underwater)) (PP (IN by) (S (VP (VBG carrying) (NP (DT an) (NN air) (NN supply)) (PP (IN with) (NP (PRP them))) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NP (DT a) (NN bubble)) (PP (IN of) (NP (NN air))))))))))))))) (. .)))
Some species of spider are able to live underwater by carrying an air supply with them in the form of a bubble of air.
(ROOT (S (NP (DT An) (JJ underwater) (NN spider)) (VP (VBZ uses) (NP (JJ shiny) (NN air) (NN bubble) (S (VP (TO to) (VP (VP (VB breathe)) (CC and) (VP (VB keep) (ADJP (JJ alive)))))))) (. .)))