A man is fishing off a beach into a large body of water while a young boy carries a net not too far away.
A man and his son fishing in the ocean.
It cannot necessarily be implied that a man and a boy together are a father and son. Not every large body of water is the ocean.
exists e1 p1 s1 s2 x1 x2 x3 x4.(-exists e2 s3 s4 x5 x6.(r_too(e2) & r_far(e2) & a_away(s4) & Manner(e2,s4) & Theme(e2,x6) & Actor(e2,x5) & v_carry(e2) & n_net(x6) & n_boy(x5) & a_young(s3) & Theme(s3,x5)) & while(e1,p1) & into(e1,x3) & of(x3,x4) & n_water(x4) & n_body(x3) & a_large(s2) & Theme(s2,x3) & a_off(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_fish(e1) & n_beach(x2) & n_man(x1))
exists s1 x1 x2 x3 x4 x5 x6.(n_ocean(x2) & a_topic(s1) & subset_of(x5,s1) & Time(x5,x6) & n_fishing(x6) & n_son(x5) & of(x5,x4) & n_male(x4) & in(x3,x2) & n_son(x3) & of(x3,x1) & n_male(x1) & subset_of(x1,s1) & n_man(x1))