Two people wear life jackets in a rowboat.
There are people wearing life jackets.
"Two people wear life jackets" implies that multiple people are wearing life jackets.
exists e1 x1 x2 x3 x4.(in(e1,x4) & n_rowboat(x4) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_jacket(x2) & of(x2,x3) & n_life(x3) & n_people(x1) & card_eq_2(x1))
exists p1 x1 e1 x2 x3 x4 x5.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_jacket(x4) & of(x4,x5) & n_life(x5) & (x2 = x3) & n_people(x2))