( 50 ( ( ( ( Gives ( current windchill ) ) factor ) ( when ( ( ( ( wind speed ) and ) temperature ) ( are provided ) ) ) ) . ) )
(ROOT (S (NP (CD 50)) (VP (VBZ Gives) (NP (JJ current) (NN windchill)) (NP (NN factor)) (SBAR (WHADVP (WRB when)) (S (NP (NP (NN wind) (NN speed)) (CC and) (NP (NN temperature))) (VP (VBP are) (VP (VBN provided)))))) (. .)))
50 Gives current windchill factor when wind speed and temperature are provided.
(ROOT (S (NP (NNP Windchill)) (VP (VBZ describes) (SBAR (WHNP (WP what)) (S (NP (DT the) (NN temperature)) (VP (VBZ feels) (PP (IN like) (SBAR (WHADVP (WRB when)) (S (NP (DT the) (NN wind)) (VP (VBZ is) (VP (VBN taken) (PP (IN into) (NP (NN account)))))))))))) (. .)))