It was going to be a hot day. 
( It ( ( was ( going ( to ( be ( a ( hot day ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBD was) (VP (VBG going) (S (VP (TO to) (VP (VB be) (NP (DT a) (JJ hot) (NN day))))))) (. .)))
It was going to get very warm that day.
( It ( ( was ( going ( to ( ( get ( very warm ) ) ( that day ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBD was) (VP (VBG going) (S (VP (TO to) (VP (VB get) (ADJP (RB very) (JJ warm)) (NP (DT that) (NN day))))))) (. .)))