I saw that a faint streak of daylight was showing through the curtains of the windows, and that the clock on the mantelpiece pointed to close upon five o'clock. 
( I ( ( saw ( ( ( ( that ( ( ( a ( faint streak ) ) ( of daylight ) ) ( was ( showing ( through ( ( the curtains ) ( of ( the windows ) ) ) ) ) ) ) ) , ) and ) ( that ( ( ( the clock ) ( on ( the mantelpiece ) ) ) ( pointed ( to ( close ( upon ( five o'clock ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD saw) (SBAR (SBAR (IN that) (S (NP (NP (DT a) (JJ faint) (NN streak)) (PP (IN of) (NP (NN daylight)))) (VP (VBD was) (VP (VBG showing) (PP (IN through) (NP (NP (DT the) (NNS curtains)) (PP (IN of) (NP (DT the) (NNS windows))))))))) (, ,) (CC and) (SBAR (IN that) (S (NP (NP (DT the) (NN clock)) (PP (IN on) (NP (DT the) (NN mantelpiece)))) (VP (VBD pointed) (S (VP (TO to) (VP (VB close) (PP (IN upon) (NP (CD five) (RB o'clock))))))))))) (. .)))
I saw that it was already morning, and the sun was coming up.
( ( ( ( ( I ( saw ( that ( it ( ( was already ) morning ) ) ) ) ) , ) and ) ( ( the sun ) ( was ( coming up ) ) ) ) . )
(ROOT (S (S (NP (PRP I)) (VP (VBD saw) (SBAR (IN that) (S (NP (PRP it)) (VP (VBD was) (ADVP (RB already)) (NP (NN morning))))))) (, ,) (CC and) (S (NP (DT the) (NN sun)) (VP (VBD was) (VP (VBG coming) (PRT (RP up))))) (. .)))