premise: Several people are picketing oil.
hypothesis: Some people doing something.
explanation_1: Picketing oil is doing something.
explanation_2: Picketing oil is doing something, and several people are some people.
explanation_3: Several people could be said as some people, and if they are picketing oil then they are doing something.
premise_logic: exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_picket(e1) & n_oil(x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_thing(x3) & (x1 = x2) & n_people(x1))