premise: Four people in emergency suits and helmets spray water from behind a cement wall.
hypothesis: A emergency staff tends to a situation.
explanation_1: The emergency situation is made clear in both statements. I believe these lines are reversed, and the difference is the suits they are wearing.
explanation_2: Just because four people are in emergency suits and helmets it does not mean they are emergency staff.
explanation_3: People in emergency suits may not necessarily be part of a staff.
premise_logic: exists e1 x1 x2 x3 x4 x5 x6 x7 x8.(behind(e1,x7) & n_wall(x7) & of(x7,x8) & n_cement(x8) & r_from(e1) & Theme(e1,x6) & Actor(e1,x1) & v_spray(e1) & n_water(x6) & in(x1,x2) & subset_of(x5,x2) & n_helmet(x5) & subset_of(x3,x2) & n_suit(x3) & of(x3,x4) & n_emergency(x4) & n_people(x1) & card_eq_4(x1))
hypothesis_logic: exists e1 x1 x2 x3.(to(e1,x3) & n_situation(x3) & Actor(e1,x1) & v_tend(e1) & n_staff(x1) & of(x1,x2) & n_emergency(x2))