premise: Man with mustache plays violin.
hypothesis: The man is serenading a couple at a restaurant.
explanation_1: Violins can be played for reasons other than serenading a couple and at places other than a restaurant.
explanation_2: Playing a violin does not mean it is necessarily serenading a couple.
explanation_3: Not only violins are used for serenading.
premise_logic: exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_violin(x3) & with(x1,x2) & n_mustache(x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_man(x1) & at(e1,x3) & n_restaurant(x3) & Theme(e1,x2) & Actor(e1,x1) & v_serenade(e1) & n_couple(x2))