( They ( ( can ( ( range ( in weight ) ) ( from ( ( ultra-light ( MTA ( ( -LRB- ( ( Maximum ( Time Aloft ) ) -RRB- ) ) boomerangs ) ) ) ( designed ( to ( ( stay ( in ( ( the air ) ( for ( a ( long time ) ) ) ) ) ) ( to ( ( heavy ( , ( lead ( weighted boomerangs ) ) ) ) ( designed ( to ( ( travel ( a ( long distance ) ) ) ( before ( turning ( to ( return ( to ( the thrower ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (MD can) (VP (VB range) (PP (IN in) (NP (NN weight))) (PP (IN from) (NP (NP (JJ ultra-light) (NN MTA) (PRN (-LRB- -LRB-) (NP (NNP Maximum) (NNP Time) (NNP Aloft)) (-RRB- -RRB-)) (NNS boomerangs)) (VP (VBN designed) (S (VP (TO to) (VP (VB stay) (PP (IN in) (NP (NP (DT the) (NN air)) (PP (IN for) (NP (DT a) (JJ long) (NN time))))) (PP (TO to) (NP (NP (JJ heavy) (, ,) (JJ lead) (JJ weighted) (NNS boomerangs)) (VP (VBN designed) (S (VP (TO to) (VP (VB travel) (NP (DT a) (JJ long) (NN distance)) (PP (IN before) (S (VP (VBG turning) (S (VP (TO to) (VP (VB return) (PP (TO to) (NP (DT the) (NN thrower))))))))))))))))))))))) (. .)))
They can range in weight from ultra-light MTA (Maximum Time Aloft) boomerangs designed to stay in the air for a long time to heavy, lead weighted boomerangs designed to travel a long distance before turning to return to the thrower.
(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)))))) (. .)))