premise: A newspaper delivery man smiles as he walks down a sidewalk holding his papers on top of his head.
hypothesis: This person's only job is being a welder on an oil rig.
explanation_1: If his only job is being a welder, he cannot be a newspaper delivery man.
explanation_2: This person is either a newspaper delivery man or a welder on an oil rig.
explanation_3: The newspaper delivery man cannot also be a welder on a oil rig.
premise_logic: exists e1 p1 x1 x2 x3 x5 x7.(exists e3 e2 s1 x1 x4 x6.(for(e2,e3) & on(e3,x6) & of(x6,x7) & n_male(x1) & n_male(x1) & n_top(x6) & Theme(e3,x5) & Actor(e3,x1) & v_hold(e3) & a_down(s1) & Manner(e2,s1) & Theme(e2,x4) & Actor(e2,x1) & v_walk(e2) & n_sidewalk(x4)) & n_head(x7) & of(x7,x1) & n_papers(x5) & of(x5,x1) & n_male(x1) & as(e1,p1) & Actor(e1,x1) & v_smile(e1) & n_man(x1) & of(x1,x3) & n_delivery(x3) & of(x1,x2) & n_newspaper(x2))
hypothesis_logic: exists p1 x1 x2.(all x3.(n_job(x3) -> (x2 = x3)) & n_job(x2) & of(x2,x1) & n_person(x1) & exists x4 x5 x6.((x2 = x4) & on(x4,x5) & n_rig(x5) & of(x5,x6) & n_oil(x6) & n_welder(x4)))