( ( ( ( ( ( As ( lava cools ) ) ( , ( crystals ( will grow ) ) ) ) , ) and ) ( eventually ( ( the lava ) ( will solidify ) ) ) ) . )
(ROOT (S (S (SBAR (IN As) (S (NP (NN lava)) (VP (VBZ cools)))) (, ,) (NP (NNS crystals)) (VP (MD will) (VP (VB grow)))) (, ,) (CC and) (S (ADVP (RB eventually)) (NP (DT the) (NN lava)) (VP (MD will) (VP (VB solidify)))) (. .)))
As lava cools, crystals will grow, and eventually the lava will solidify.
(ROOT (S (NP (JJ Mineral) (NNS crystals)) (VP (VBP are) (VP (VBN formed) (SBAR (WHADVP (WRB when)) (S (NP (JJ hot) (NN lava)) (VP (VBZ cools)))))) (. .)))