Young people in summer clothing sit on graffited walls.
A group of students are enjoying their lunch break outside.
Young people can be doing something else instead of enjoying lunch break
exists e1 s1 s2 x1 x2 x3 x4.(on(e1,x4) & n_wall(x4) & a_graffited(s2) & Theme(s2,x4) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & n_clothing(x2) & of(x2,x3) & n_summer(x3) & n_people(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3 x4 x5.(Theme(e1,x3) & Actor(e1,x1) & v_enjoy(e1) & Theme(s1,x5) & a_outside(s1) & (x3 = x5) & n_break(x3) & of(x3,x4) & n_lunch(x4) & of(x3,x1) & n_thing(x1) & of(x1,x2) & n_student(x2) & n_group(x1))