premise: A person is reaching up to touch the middle light fixture hanging from a ceiling.
hypothesis: She is changing the lightbulb
explanation_1: Not just because a person is reaching up to touch the light fixture doesn't mean she is changing the lightbulb
explanation_2: "A person" doesn't necessarily mean "she", touching the light fixture does not necessarily mean changing the lightbulb
explanation_3: A person reaching up to the ceiling doesn't necessarily mean she's changing a lightbulb.
premise_logic: exists e1 p1 s1 s2 x1 x2 x3.(n_fixture(x2) & of(x2,x3) & n_light(x3) & a_middle(s2) & Theme(s2,x2) & a_up(s1) & Manner(e1,s1) & Topic(e1,p1) & Actor(e1,x1) & v_reach(e1) & exists e3 e2 x4 x5.(Theme(e3,x2) & Actor(e3,x1) & v_touch(e3) & from(e2,x5) & n_ceiling(x5) & Actor(e2,x4) & v_hang(e2) & (x2 = x4)) & n_person(x1))
hypothesis_logic: exists e1 x1 x2.(n_lightbulb(x2) & n_female(x1) & Theme(e1,x2) & Actor(e1,x1) & v_change(e1))