just unmistakably <apostrophe><apostrophe> two giggles tossed .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (ATS_0 (ADVP_0 (RB_0 just)) (ADVP_0 (RB_0 unmistakably))) (APOSTROPHE_0 <apostrophe><apostrophe>)) (NP_0 (CD_0 two) (NNS_0 giggles))) (VP_3 (VBD_0 tossed))) (DOT_0 .)))