Are you sure we should take him down there?' Greuze asked Natalia.
( ( ( ( Are you ) ( sure ( we ( should ( ( take him ) ( down there ) ) ) ) ) ) ? ) ( ' ( Greuze ( ( asked Natalia ) . ) ) ) )
(ROOT (S (SQ (VBP Are) (NP (PRP you)) (VP (VBG sure) (SBAR (S (NP (PRP we)) (VP (MD should) (VP (VB take) (NP (PRP him)) (ADVP (RB down) (RB there))))))) (. ?)) ('' ') (NP (NNP Greuze)) (VP (VBD asked) (NP (NNP Natalia))) (. .)))
Natalia, knowing that it could be very dangerous to venture forth with him, asked Greuze if it was really wise to take him down there, thinking that it may not be completely safe to continue on at the moment.
( Natalia ( , ( ( knowing ( that ( it ( could ( be ( very ( dangerous ( to ( ( venture forth ) ( with him ) ) ) ) ) ) ) ) ) ) ( , ( ( ( asked Greuze ) ( if ( it ( was ( really ( wise ( to ( ( ( ( take him ) ( down there ) ) , ) ( thinking ( that ( it ( ( may not ) ( be ( completely ( safe ( to ( ( continue on ) ( at ( the moment ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (NP (NNP Natalia)) (, ,) (S (VP (VBG knowing) (SBAR (IN that) (S (NP (PRP it)) (VP (MD could) (VP (VB be) (ADJP (RB very) (JJ dangerous) (S (VP (TO to) (VP (VB venture) (PRT (RP forth)) (PP (IN with) (NP (PRP him))))))))))))) (, ,) (VP (VBD asked) (NP (NNP Greuze)) (SBAR (IN if) (S (NP (PRP it)) (VP (VBD was) (ADJP (RB really) (JJ wise) (S (VP (TO to) (VP (VB take) (NP (PRP him)) (ADVP (RB down) (RB there)) (, ,) (S (VP (VBG thinking) (SBAR (IN that) (S (NP (PRP it)) (VP (MD may) (RB not) (VP (VB be) (ADJP (RB completely) (JJ safe) (S (VP (TO to) (VP (VB continue) (PRT (RP on)) (PP (IN at) (NP (DT the) (NN moment))))))))))))))))))))) (. .)))