( ( ( ( ( ( ( Electric motors ) and ) batteries ) ( ( are ( ( cheap and ) simple ) ) ( compared ( with ( fossil ( fuel motors ) ) ) ) ) ) and ) ( ( a ( solar sailor ) ) ( ( does not ) ( require ( ( ( ( ( conventional ( expensive masts ) ) , ) sails ) and ) rigging ) ) ) ) ) . )
(ROOT (S (S (NP (NP (NNP Electric) (NNS motors)) (CC and) (NP (NNS batteries))) (VP (VBP are) (ADJP (JJ cheap) (CC and) (JJ simple)) (PP (VBN compared) (PP (IN with) (NP (JJ fossil) (NN fuel) (NNS motors)))))) (CC and) (S (NP (DT a) (JJ solar) (NN sailor)) (VP (VBZ does) (RB not) (VP (VB require) (NP (NP (JJ conventional) (JJ expensive) (NNS masts)) (, ,) (NP (NNS sails)) (CC and) (NP (NN rigging)))))) (. .)))
Electric motors and batteries are cheap and simple compared with fossil fuel motors and a solar sailor does not require conventional expensive masts, sails and rigging.
(ROOT (S (NP (NP (NNP Solar)) (CC and) (NP (NN wind))) (VP (VBP are) (ADVP (RB still)) (ADJP (JJ expensive)) (PP (VBN compared) (PP (TO to) (NP (JJ fossil) (NNS fuels))))) (. .)))