premise: Tourists on a bridge pose for a photograph.
hypothesis: The President of the United States sits at his desk in the Oval Office.
explanation_1: Action of a pose as opposed to sits. (Although I could conjecture the Prez be posing know what I mean)
explanation_2: The first sentence talks of tourists on a bridge, the second mentions the president at his desk. The president is not a tourist in the oval office.
explanation_3: The President of the United States is not a tourist and the Oval Office is not on a bridge.
premise_logic: exists e1 x1 x2 x3.(for(e1,x3) & n_photograph(x3) & Actor(e1,x1) & v_pose(e1) & on(x1,x2) & n_bridge(x2) & n_tourist(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4 x5 x6.(ne_org_office(x5) & (x5 = x6) & ne_org_oval(x6) & n_desk(x4) & of(x4,x1) & n_male(x1) & ne_geo_states(x2) & (x2 = x3) & ne_geo_united(x3) & ne_nam_president(x1) & in(e1,x5) & at(e1,x4) & Actor(e1,x1) & v_sit(e1) & of(x1,x2))