A group of adults riding exercise bikes in a room with a long mirror.
A group of adults in a spin class.
A group of adults riding exercise bikes in a room with a long mirror but not in a spin class.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & of(x1,x2) & in(e1,x6) & with(x6,x7) & n_mirror(x7) & a_long(s1) & Theme(s1,x7) & n_room(x6) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_bike(x4) & of(x4,x5) & n_exercise(x5) & (x2 = x3) & n_adult(x2) & n_group(x1))
exists x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & in(x2,x3) & n_class(x3) & of(x3,x4) & n_spin(x4) & n_adult(x2) & n_group(x1))