Happy man grilling meat on his barbecue.
A man is happy at his barbecue because people are coming over to visit.
Just because a man is grilling it does not mean people are coming over to visit.
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_barbecue(x3) & of(x3,x1) & n_male(x1) & n_meat(x1) & Actor(e1,x1) & v_grill(e1) & of(x1,x2) & n_man(x2) & a_happy(s1) & Theme(s1,x1))
exists p1 s1 x1 x2.(exists e1 p2 s2 x3 x4.(Topic(e1,p2) & exists e2.(Actor(e2,x3) & v_visit(e2)) & a_over(s2) & Manner(e1,s2) & Actor(e1,x4) & v_come(e1) & n_people(x4) & n_people(x3)) & because(s1,p1) & at(s1,x2) & n_barbecue(x2) & of(x2,x1) & n_male(x1) & Theme(s1,x1) & a_happy(s1) & n_man(x1))