A group of teenagers near Simpsons characters.
A group of teenagers.
Group of teenagers is common in both sentences
exists x1 x2 x3 x4.(a_topic(x1) & near(x1,x3) & n_character(x3) & of(x3,x4) & n_simpson(x4) & of(x1,x2) & n_teenager(x2) & n_group(x1))
exists x1 x2.(a_topic(x1) & of(x1,x2) & n_teenager(x2) & n_group(x1))