Man sits beside water while reading something.
a person reads and sits
2 simply uses a noun and verbs without further explaining about a man who sits and reads. .
exists e1 e2 x1 x2 x3.(while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_read(e2) & n_thing(x3) & beside(e1,x2) & n_water(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e2 e1 x1 x2.(Actor(e2,x2) & v_sit(e2) & n_person(x2) & Actor(e1,x1) & v_read(e1) & n_person(x1))