premise: A couple of people sit outdoors at a table with an umbrella and talk.
hypothesis: Two people are seated and talking to each other.
explanation_1: A couple of people means the same as two people.  If they were to sit outdoors, they would have to be seated.  More than likely, they would be talking to each other.
premise_logic: exists e1 x1 x2 x3 x4 x5 x6 x7.(at(e1,x4) & with(x4,x5) & n_talk(x7) & n_umbrella(x6) & subset_of(x7,x5) & subset_of(x6,x5) & n_table(x4) & Time(e1,x3) & n_outdoors(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & n_couple(x1))
hypothesis_logic: exists e1 e2 x1 x2 x3 x4.(a_topic(x3) & all x5.(n_other(x5) -> to(e2,x5)) & Actor(e2,x4) & v_talk(e2) & (x3 = x4) & n_people(x3) & card_eq_2(x3) & a_topic(x1) & Theme(e1,x2) & v_seat(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
premise_sim: exists e1 x1 x2 x3 x4 x5 x6 x7.(with(x4,x5) & v_sit(e1) & subset_of(x7,x5) & subset_of(x6,x5) & of(x1,x2) & n_umbrella(x6) & n_talk(x7) & n_table(x4) & n_people(x2) & n_outdoors(x3) & n_couple(x1) & at(e1,x4) & Time(e1,x3) & Actor(e1,x1))
hypothesis_sim: exists e1 e2 x1 x2 x3 x4.(v_talk(e2) & v_seat(e1) & n_people(x3) & n_people(x1) & card_eq_2(x3) & card_eq_2(x1) & all x5.(to(e2,x5) | -n_other(x5)) & a_topic(x3) & a_topic(x1) & Theme(e1,x2) & Actor(e2,x4) & (x3 = x4) & (x1 = x2))