Two friends enjoying the day at an amusement park ride.
A man rides the roller coaster alone
If you are riding with two friends, you are not riding alone.
exists e1 x1 x2 x3 x4 x5.(n_day(x2) & at(e1,x3) & n_ride(x3) & of(x3,x5) & n_park(x5) & of(x3,x4) & n_amusement(x4) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_friend(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_coaster(x2) & of(x2,x3) & n_roller(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & r_alone(x2) & n_man(x1))