A brown and white dog is standing in the river by the bank.
A brown and white dog is by a river ready to fetch.
Standing by the river doesn't imply ready to fetch anything.
exists e1 s1 s2 x1 x2 x3.(n_bank(x3) & n_river(x2) & by(e1,x3) & in(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_brown(s1) & Theme(s1,x1))
exists p1 s1 s2 x1.(exists p2 s3 x2 x3.(by(x1,x2) & Topic(s3,p2) & Actor(s3,x3) & a_ready(s3) & exists e1.(Actor(e1,x3) & v_fetch(e1)) & (x2 = x3) & n_river(x2)) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_brown(s1) & Theme(s1,x1))