Man and child in yellow kayak
The man and his son are paddling on the river.
Just because they are in a kayak doesn't mean they are in a water source like a river or that they are paddling.
exists s1 s2 x1 x2 x3.(a_topic(s1) & subset_of(x2,s1) & in(x2,x3) & n_kayak(x3) & a_yellow(s2) & Theme(s2,x3) & n_child(x2) & subset_of(x1,s1) & n_man(x1))
exists e1 x1 x2 x3 x4.(n_river(x4) & n_son(x3) & of(x3,x2) & n_male(x2) & n_man(x2) & on(e1,x4) & Actor(e1,x1) & v_paddle(e1) & subset_of(x3,x1) & subset_of(x2,x1))