premise: A couple of friends have a drink.
hypothesis: Two people are drinking.
explanation_1: "A couple having a drink" is a rephrasing of "two people drinking".
explanation_2: Two is a couple,  people can be friends,  and have a drink can be rephrased as drinking.
explanation_3: A couple of friends have a drink, therefore there are two people drinking.
premise_logic: exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_drink(x3) & of(x1,x2) & n_friend(x2) & n_couple(x1))
hypothesis_logic: exists e1 x1.(Actor(e1,x1) & v_drink(e1) & n_people(x1) & card_eq_2(x1))
premise_sim: exists e1 x1 x2 x3.(v_have(e1) & of(x1,x2) & n_friend(x2) & n_drink(x3) & n_couple(x1) & Theme(e1,x3) & Actor(e1,x1))
hypothesis_sim: exists e1 x1.(v_drink(e1) & n_people(x1) & card_eq_2(x1) & Actor(e1,x1))