A man in uniform tries to find something with the help of a sniffing dog.
People playing with a puppy
The first sentence states it is a singular man, while the other states there is multiple people.
exists p1 s1 x1 x2 x4.(n_help(x4) & a_topic(x1) & in(x1,x2) & Topic(x2,p1) & exists e1 x3 x5 x6.(with(e1,x4) & of(x4,x5) & n_dog(x5) & of(x5,x6) & n_sniffing(x6) & Theme(e1,x3) & Actor(e1,x2) & v_find(e1) & n_thing(x3)) & n_try(x2) & a_uniform(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3.(a_topic(x1) & with(e1,x3) & n_puppy(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_people(x1))