A street performer smiles at two potential customers.
A person is happy to see others.
A street performer is a person, smiling usually means someone is happy, and customers could be considered other people in relation to the street performer.
exists e1 s1 x1 x2 x3.(at(e1,x3) & n_customer(x3) & a_potential(s1) & Theme(s1,x3) & card_eq_2(x3) & Actor(e1,x1) & v_smile(e1) & n_performer(x1) & of(x1,x2) & n_street(x2))
exists p1 s1 x1.(Topic(s1,p1) & Actor(s1,x1) & a_happy(s1) & exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_see(e1) & -(x2 = x1) & n_person(x2)) & n_person(x1) & n_person(x1))