Climbers dressed in warm clothing are at the base of a small mountain.
The climbers are about to write a novel.
Climbers are not usually writing a novel.  One does not usually write a novel at the base of a mountain.
exists e1 p1 s1 x1 x2 x3 x4.(n_base(x4) & exists s2 x5.(at(x1,x4) & of(x4,x5) & n_mountain(x5) & a_small(s2) & Theme(s2,x5)) & in(e1,x3) & n_clothing(x3) & a_warm(s1) & Theme(s1,x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_climber(x1))
exists p1 s1 x1.(n_climber(x1) & Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_write(e1) & n_novel(x2)))