A man in a white shirt hammers one piece of wood while a boy in a black, white and orange hat looks at another piece of wood.
The boy is helping his father at his job.
There is nothing to indicate the man in the white shirt is the boy's father, nor that he is helping him rather than being a bystander.
(x)
exists e1 x1 x2 x3.(n_job(x3) & of(x3,x1) & n_male(x1) & n_male(x1) & n_father(x2) & of(x2,x1) & n_boy(x1) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_help(e1))