Well, because it was really interesting stuff.
( Well ( , ( ( because ( it ( was ( really interesting ) ) ) ) ( stuff . ) ) ) )
(ROOT (S (ADVP (RB Well)) (, ,) (SBAR (IN because) (S (NP (PRP it)) (VP (VBD was) (ADJP (RB really) (JJ interesting))))) (VP (VBP stuff)) (. .)))
That stuff was utterly boring for me.
( ( That stuff ) ( ( was ( utterly ( boring ( for me ) ) ) ) . ) )
(ROOT (S (NP (DT That) (NN stuff)) (VP (VBD was) (ADJP (RB utterly) (VBG boring) (PP (IN for) (NP (PRP me))))) (. .)))