There were maybe three hundred people present.
( There ( ( ( were ( maybe ( ( three hundred ) people ) ) ) present ) . ) )
(ROOT (S (NP (EX There)) (VP (VBD were) (ADVP (RB maybe) (NP (QP (CD three) (CD hundred)) (NNS people))) (ADJP (JJ present))) (. .)))
300 people were there.
( ( 300 people ) ( ( were there ) . ) )
(ROOT (S (NP (CD 300) (NNS people)) (VP (VBD were) (ADVP (RB there))) (. .)))