Boy with goggles is swimming.
A boy with goggles is swimming for the first time.
The boy may not be swimming for his first time.
exists p1 x1 x2.(ne_nam_boy(x1) & exists x3.((x1 = x3) & n_swimming(x3)) & with(x1,x2) & n_goggles(x2))
exists e1 s1 x1 x2 x3.(n_time(x3) & a_first(s1) & Theme(s1,x3) & for(e1,x3) & Actor(e1,x1) & v_swim(e1) & with(x1,x2) & n_goggles(x2) & n_boy(x1))