( It ( ( has ( ( ( ( an ( ( extreme continental ) climate ) ) ( with ( ( ( long ( , ( cold winters ) ) ) and ) ( short summers ) ) ) ) , ) ( ( during which ) ( ( most precipitation ) falls ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ has) (NP (NP (DT an) (ADJP (JJ extreme) (JJ continental)) (NN climate)) (PP (IN with) (NP (NP (JJ long) (, ,) (JJ cold) (NNS winters)) (CC and) (NP (JJ short) (NNS summers)))) (, ,) (SBAR (WHPP (IN during) (WHNP (WDT which))) (S (NP (JJS most) (NNS precipitation)) (VP (VBZ falls)))))) (. .)))
It has an extreme continental climate with long, cold winters and short summers, during which most precipitation falls.
(ROOT (S (S (VP (VBN Exemplified) (PP (IN by) (NP (NN canada) (CC and) (NN alaska))))) (, ,) (NP (DT a) (JJ subarctic) (NN climate)) (VP (VBZ has) (NP (NP (JJ cool) (, ,) (JJ short) (NNS summers)) (CC and) (ADVP (RB long)) (, ,) (NP (JJ cold) (NNS winters)) (, ,) (NP (JJ little) (NN precipitation)) (, ,) (CC and) (NP (JJ abundant) (NNS conifers)))) (. .)))