An Indian man working on a stone wall.
An Indian man is sleeping next to the stone wall.
One can not be working and sleeping simultaneously.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_wall(x3) & of(x3,x4) & n_stone(x4) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1) & a_indian(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_wall(x2) & of(x2,x3) & n_stone(x3) & to(e1,x2) & r_next(e1) & Actor(e1,x1) & v_sleep(e1) & n_man(x1) & a_indian(s1) & Theme(s1,x1))