A group of young men throwing rocks in a foreign country.
The men are skipping stones on a lake.
Skipping stones is gentler than throwing rocks.
exists e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & in(e1,x5) & n_country(x5) & a_foreign(s2) & Theme(s2,x5) & Theme(e1,x4) & Actor(e1,x3) & v_throw(e1) & n_rock(x4) & (x2 = x3) & n_man(x2) & a_young(s1) & Theme(s1,x2) & n_group(x1))
exists e1 x1 x2 x3.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_skip(e1) & on(x2,x3) & n_lake(x3) & n_stone(x2))