The dressed up young people are sitting in chairs while they wait.
The girls are planting flowers in a garden.
Planting indicates people doing something and sitting is not doing anything
exists e1 e2 p1 s1 x1 x2.(n_thing(x1) & n_people(x1) & a_young(s1) & Theme(s1,x1) & r_up(x1) & Theme(e1,x1) & v_dress(e1) & exists e3.(Actor(e3,x1) & v_wait(e3)) & while(e2,p1) & in(e2,x2) & n_chair(x2) & Actor(e2,x1) & v_sit(e2))
exists e1 x1 x2 x3.(n_girl(x1) & in(e1,x3) & n_garden(x3) & Theme(e1,x2) & Actor(e1,x1) & v_plant(e1) & n_flower(x2))