( ( While ( astronomers ( ( have long ) ( thought ( that ( water ( ( flowed through ) ( ( ( ( ( ( ( asteroids and ) ( ( other bodies ) ( formed ( at ( ( the beginning ) ( of ( ( ( the ( solar system ) ) , ) ( ( the ( Monahans ( meteorite 's ) ) ) ( liquid cargo ) ) ) ) ) ) ) ) ) , ) and ) now ) possibly ) ( the ( Zag 's ) ) ) ) ) ) ) ) ) ) ( , ( ( offer ( the ( first ( chance ( to ( actually ( ( study it ) ( in ( a lab ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (SBAR (IN While) (S (NP (NNS astronomers)) (VP (VBP have) (ADVP (RB long)) (VP (VBN thought) (SBAR (IN that) (S (NP (NN water)) (VP (VBD flowed) (PRT (RP through)) (NP (NP (NNS asteroids)) (CC and) (NP (NP (JJ other) (NNS bodies)) (VP (VBN formed) (PP (IN at) (NP (NP (DT the) (NN beginning)) (PP (IN of) (NP (NP (DT the) (JJ solar) (NN system)) (, ,) (NP (NP (DT the) (NNP Monahans) (NN meteorite) (POS 's)) (JJ liquid) (NN cargo)))))))) (, ,) (CC and) (ADVP (RB now)) (RB possibly) (NP (DT the) (NP (NNP Zag) (POS 's))))))))))) (, ,) (VP (VB offer) (NP (DT the) (JJ first) (NN chance) (S (VP (TO to) (VP (ADVP (RB actually)) (VB study) (NP (PRP it)) (PP (IN in) (NP (DT a) (NN lab)))))))) (. .)))
While astronomers have long thought that water flowed through asteroids and other bodies formed at the beginning of the solar system, the Monahans meteorite's liquid cargo, and now possibly the Zag's, offer the first chance to actually study it in a lab.
(ROOT (S (NP (NNS Meteorites)) (VP (VBP are) (ADVP (RB often)) (VP (VBN comprised) (PP (IN of) (NP (NP (NNS remnants)) (PP (IN of) (NP (NP (DT the) (JJS earliest) (NN material)) (SBAR (WHNP (WDT that)) (S (VP (VBN formed) (PP (IN in) (NP (DT the) (JJ solar) (NN system)))))))))))) (. .)))