A singer performing along with the crowd.
A group of people are engaged in one activity.
A singer performing is engaging, so that is why the group of people are engaged.
exists e1 x1 x2 x3.(n_crowd(x3) & a_topic(x1) & with(e1,x3) & r_along(e1) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_singer(x1))
exists e1 x1 x2 x3.(in(e1,x3) & n_activity(x3) & card_eq_1(x3) & Theme(e1,x1) & v_engage(e1) & of(x1,x2) & n_people(x2) & n_group(x1))