( ( ( Earthquakes and ) soil ) ( ( slides ( loomed ( as ( destructive occurances ) ) ) ) . ) )
(ROOT (S (NP (NNS Earthquakes) (CC and) (NN soil)) (VP (VBZ slides) (VP (VBN loomed) (PP (IN as) (NP (JJ destructive) (NNS occurances))))) (. .)))
Earthquakes and soil slides loomed as destructive occurances.
(ROOT (S (NP (NP (CD Two) (NNS plates)) (VP (VBG sliding))) (VP (MD can) (VP (VB increase) (NP (NP (DT the) (NN occurance)) (PP (IN of) (NP (NNS earthquakes)))))) (. .)))