premise: People wearing black, some with face masks, are singing.
hypothesis: There are people.
explanation_1: If people wearing black, some with face masks, are singing, it implies they exist and therefore there are people existing at one point in space and time.
premise_logic: exists e2 e1 p1 x1 x2 x3 x4 x5.(Actor(e2,x1) & v_sing(e2) & rel(x1,x3) & with(x3,x4) & n_mask(x4) & of(x4,x5) & n_face(x5) & n_thing(x3) & exists s1.(Theme(s1,x2) & a_black(s1)) & Topic(e1,p1) & Actor(e1,x2) & v_wear(e1) & (x1 = x2) & n_people(x1))
hypothesis_logic: exists p1 x1 x2.((x1 = x2) & n_people(x2))
premise_sim: exists e2 e1 p1 x1 x2 x3 x4 x5.(with(x3,x4) & v_wear(e1) & v_sing(e2) & rel(x1,x3) & of(x4,x5) & n_thing(x3) & n_people(x1) & n_mask(x4) & n_face(x5) & exists s1.(a_black(s1) & Theme(s1,x2)) & Topic(e1,p1) & Actor(e2,x1) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists x1 x2.(n_people(x2) & (x1 = x2))