Someone has trained the dog well.
Here is a dog.
Sentence 2 shows us the well trained dog that is here.
exists e1 s1 x1 x2.(n_dog(x2) & a_well(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_train(e1) & n_person(x1))
exists s1 x1.(Theme(s1,x1) & a_here(s1) & n_dog(x1))