Mary-ga [John-ga [zibun-no gakusei-ga juuyoona kasetsu-o teian-shi-ta to] jimanshite-ita-no]-no kekkan-o shiteki-shi-ta .
Mary-NOM John-NOM self-GEN student-NOM important hypothesis-ACC propose-do-PAST COMP boasted-had-no-GEN defect-ACC point.out-do-PAST
[John had boasted [that his student proposed an important hypothesis]] and Mary pointed out a defect in it.