A man and a woman are sitting in a rowboat on calm water.
A couple is having a date in a rowboat.
The man and woman are not necessarily a couple that are having a date.
exists e1 s1 x1 x2 x3 x4 x5.(in(e1,x4) & on(x4,x5) & n_water(x5) & a_calm(s1) & Theme(s1,x5) & n_rowboat(x4) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & in(x2,x3) & n_rowboat(x3) & n_date(x2) & n_couple(x1))