A woman riding a horse with the ocean in the background.
a woman riding a horse for the first time
There is no particular reason to think this is the first time the woman has ridden a horse.
exists e1 x1 x2 x3 x4 x5.(n_background(x5) & n_ocean(x4) & a_topic(x1) & with(e1,x4) & in(x4,x5) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_horse(x3) & (x1 = x2) & n_woman(x1))
exists e1 s1 x1 x2 x3 x4.(n_time(x4) & a_first(s1) & Theme(s1,x4) & a_topic(x1) & for(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_horse(x3) & (x1 = x2) & n_woman(x1))