Several people gathered in front of the sunrise over a mountain range, while sitting on prayer mats.
The people forgot to bring something to sit on.
You can not have prayer mats when you have forgotten to bring something to sit on.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(n_sunrise(x3) & while(e1,e2) & on(e2,x6) & n_mat(x6) & of(x6,x7) & n_prayer(x7) & Actor(e2,x1) & v_sit(e2) & in(e1,x2) & over(x2,x4) & n_range(x4) & of(x4,x5) & n_mountain(x5) & of(x2,x3) & n_front(x2) & Actor(e1,x1) & v_gather(e1) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 p1 x1.(n_people(x1) & Topic(e1,p1) & Actor(e1,x1) & v_forget(e1) & exists e2 p2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_bring(e2) & Topic(x2,p2) & exists e3 x3.(on(e3,x3) & n_thing(x3) & Actor(e3,x2) & v_sit(e3)) & n_thing(x2)))