( ( ( ( Seek shelter ) ( from ( ( wind and ) rain ) ) ) ( if ( you ( are lost ) ) ) ) . )
(ROOT (S (VP (VB Seek) (NP (NN shelter)) (PP (IN from) (NP (NN wind) (CC and) (NN rain))) (SBAR (IN if) (S (NP (PRP you)) (VP (VBP are) (VP (VBN lost)))))) (. .)))
Seek shelter from wind and rain if you are lost.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (PRP it)) (VP (VBZ rains)))) (, ,) (NP (DT some) (NNS animals)) (VP (MD will) (VP (VB move) (S (VP (TO to) (VP (VB seek) (NP (NN shelter))))))) (. .)))