Two people riding a motorcycle on a cold day.
One person is riding alone.
Two people can not be a singular person.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_day(x4) & a_cold(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_motorcycle(x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1.(a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_ride(e1) & n_person(x1) & card_eq_1(x1))