that Wiping lower Plus stronger <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (WHNP_0 (WDT_0 that)) (S_2 (VP_0 (VBG_0 Wiping)))) (ADVP_0 (ATADVP_3 (JJR_0 lower) (CC_0 Plus)) (JJR_0 stronger))) (APOSTROPHE_0 <apostrophe><apostrophe>)))