( ( ( Hurricanes and ) tornadoes ) ( both ( ( form ( in ( ( warm ( , ( damp air ) ) ) ( when ( winds ( ( blow ( into ( each other ) ) ) ( from ( opposite directions ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (NNPS Hurricanes)) (CC and) (NP (NNS tornadoes))) (DT both) (VP (VBP form) (PP (IN in) (NP (NP (JJ warm) (, ,) (JJ damp) (NN air)) (SBAR (WHADVP (WRB when)) (S (NP (NNS winds)) (VP (VB blow) (PP (IN into) (NP (DT each) (JJ other))) (PP (IN from) (NP (JJ opposite) (NNS directions))))))))) (. .)))
Hurricanes and tornadoes both form in warm, damp air when winds blow into each other from opposite directions.
(ROOT (S (NP (DT Both) (NNS hurricanes) (CC and) (NNS tornadoes)) (ADVP (RB always)) (VP (VBP have) (NP (JJ high) (NNS winds))) (. .)))