premise: Group sweeping away leakage while bystanders look on.
hypothesis: A group cleans up after a major leak.
explanation_1: Sweeping away leakage does not mean cleans up after a major leak.
explanation_2: Sweeping away leakage does not necessarily imply that a major leak occurred.
explanation_3: Not all group sweeping away leakage cleans up after a major leak.
premise_logic: exists e1 p1 x1 x2.(ne_org_group(x1) & exists e2 p2 x3.(exists s1.(Theme(s1,x3) & a_on(s1)) & Topic(e2,p2) & Actor(e2,x3) & v_look(e2) & n_bystander(x3)) & while(e1,p1) & Actor(e1,x1) & v_leakage(e1) & away(x1,x2) & n_sweeping(x2))
hypothesis_logic: exists e1 s1 s2 x1 x2.(after(e1,x2) & n_leak(x2) & a_major(s2) & Theme(s2,x2) & a_up(s1) & Manner(e1,s1) & Actor(e1,x1) & v_clean(e1) & n_group(x1))