A guy enjoying himself waterskiing out on a lake.
a guy is having a good time skiing.
"Enjoying himself" is a substitute for the expression of "having a good time".
exists e2 e1 s1 x1 x2 x3.(a_topic(x1) & for(e1,e2) & a_out(s1) & Manner(e2,s1) & on(e2,x3) & n_lake(x3) & Actor(e2,x2) & v_waterskie(e2) & Theme(e1,x1) & Actor(e1,x2) & v_enjoy(e1) & n_male(x1) & (x1 = x2) & n_guy(x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_skiing(x2) & of(x2,x3) & n_time(x3) & a_good(s1) & Theme(s1,x2) & n_guy(x1))