A man wearing a black shirt and a girl wearing an orange shirt sitting on the pavement eating.
A man and a girl sit while eating their lunch.
The food may not be their own.  Lunch is not the only event when people eat.
exists e1 e3 e2 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_eating(x7) & of(x7,x8) & n_pavement(x8) & on(e3,x7) & Actor(e3,x3) & v_sit(e3) & Theme(e2,x5) & Actor(e2,x4) & v_wear(e2) & n_shirt(x5) & of(x5,x6) & n_orange(x6) & (x3 = x4) & n_girl(x3) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
exists e1 e2 x1 x2 x3 x4.(while(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_eat(e2) & n_lunch(x4) & of(x4,x2) & n_thing(x2) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_girl(x3) & subset_of(x2,x1) & n_man(x2))