Two people with backpacks take a picture of something high above them, while standing in a crowd.
Two people taking pictures in a wide open field with nobody else around.
The Two people can not be in a crowd taking pictures while being in an open field with no one around at the same time.
exists e1 e2 x1 x2 x3 x4 x5.(while(e1,e2) & in(e2,x5) & n_crowd(x5) & Actor(e2,x1) & v_stand(e2) & Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & of(x3,x4) & above(x4,x1) & n_thing(x1) & r_high(x4) & n_thing(x4) & n_picture(x3) & with(x1,x2) & n_backpack(x2) & n_people(x1) & card_eq_2(x1))
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(x1) & -exists s3 x5.(a_around(s3) & Manner(e1,s3) & with(e1,x5) & r_else(x5) & n_person(x5)) & in(e1,x4) & n_field(x4) & a_open(s2) & Theme(s2,x4) & a_wide(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_take(e1) & n_picture(x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))