While others gather in areas, a man in a brown shirt sits with reading material in hand.
The man is wearing a green shirt and standing in a group.
The man cannot be sitting while others gather and then be part of a group.
exists p1 p2 p3.(exists e3 e2 s1 x3 x4 x5 x6 x7.(with(e2,e3) & in(e3,x7) & n_hand(x7) & Theme(e3,x6) & Actor(e3,x5) & v_read(e3) & n_material(x6) & Actor(e2,x3) & v_sit(e2) & in(x3,x4) & n_shirt(x4) & a_brown(s1) & Theme(s1,x4) & n_man(x3)) & exists e1 x1 x2.(in(e1,x2) & n_area(x2) & Actor(e1,x1) & v_gather(e1) & -(x1 = x2) & n_person(x2) & n_person(x1)) & while(p2,p3))
exists e1 s1 x1 x2 x3 x4 x5.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & in(x2,x5) & n_group(x5) & n_standing(x4) & n_shirt(x3) & a_green(s1) & Theme(s1,x3) & subset_of(x4,x2) & subset_of(x3,x2))