A scuba diving class taking a picture during class time.
Some people are in a scuba class.
A scuba diving class taking a picture implies some people are in a scuba class.
exists e2 e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & during(e2,x5) & n_time(x5) & of(x5,x6) & n_class(x6) & Theme(e2,x4) & Actor(e2,x3) & v_take(e2) & n_picture(x4) & (x1 = x3) & n_class(x1) & Actor(e1,x1) & v_dive(e1) & of(x1,x2) & n_scuba(x2))
exists p1 x1.(exists x2 x3.(in(x1,x2) & n_class(x2) & of(x2,x3) & n_scuba(x3)) & n_people(x1))