People in rowboat heading toward a setting sun.
the people are in a rowboat
"People are in a rowboat" is a rephrasing of "people in rowboat".
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & toward(e1,x4) & Time(x4,x5) & n_sun(x5) & n_setting(x4) & Actor(e1,x3) & v_head(e1) & (x1 = x3) & in(x1,x2) & n_rowboat(x2) & n_people(x1))
exists p1 x1.(n_people(x1) & exists x2.(in(x1,x2) & n_rowboat(x2)))