then biting into it and finding the filling missing 
(ROOT (S (ADVP (RB then)) (VP (VP (VBG biting) (PP (IN into) (NP (PRP it)))) (CC and) (VP (VBG finding) (S (NP (DT the) (NN filling)) (ADJP (NN missing)))))))
(ROOT (S (ADVP (RB )) (VP (VP (VBG ) (PP (IN ) (NP (PRP )))) (CC ) (VP (VBG ) (S (NP (DT ) (NN )) (ADJP (NN )))))))