( ( On ( ( the ( other hand ) ) ( if ( you ( 're ( yearning ( to ( ( stay aloft ) ( for ( hours ( at ( ( a time ) ( ( soaring ( with ( the birds ) ) ) ( on ( ( warm currents ) ( of ( rising air ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ( , ( then ( you ( ( 'll ( need ( to ( attend ( both ( ( ( an EP ) and ) ( a ( CP course ) ) ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (PP (IN On) (NP (NP (DT the) (JJ other) (NN hand)) (SBAR (IN if) (S (NP (PRP you)) (VP (VBP 're) (ADJP (JJ yearning) (S (VP (TO to) (VP (VB stay) (ADVP (RB aloft)) (PP (IN for) (NP (NP (NNS hours)) (PP (IN at) (NP (NP (DT a) (NN time)) (VP (VBG soaring) (PP (IN with) (NP (DT the) (NNS birds))) (PP (IN on) (NP (NP (JJ warm) (NNS currents)) (PP (IN of) (NP (VBG rising) (NN air))))))))))))))))))) (, ,) (ADVP (RB then)) (NP (PRP you)) (VP (MD 'll) (VP (VB need) (S (VP (TO to) (VP (VB attend) (NP (PDT both) (NP (DT an) (NNP EP)) (CC and) (NP (DT a) (NNP CP) (NN course)))))))) (. .)))
On the other hand if you're yearning to stay aloft for hours at a time soaring with the birds on warm currents of rising air, then you'll need to attend both an EP and a CP course.
(ROOT (S (NP (NNP Birds)) (VP (VBP need) (NP (DT a) (JJ light-weight) (NN body)) (PP (IN for)) (S (VP (TO to) (VP (VB stay) (ADVP (RB aloft)))))) (. .)))