The man is holding onto his food cart in the street.
A man holds on to the only source of income.
The food cart is not necessarily the man's only source of income.
exists e1 x1 x2 x3 x4.(n_street(x4) & n_cart(x2) & of(x2,x3) & n_food(x3) & of(x2,x1) & n_male(x1) & n_man(x1) & in(e1,x4) & onto(e1,x2) & Actor(e1,x1) & v_hold(e1))
exists e1 x1 x2 x3.(all x4.(n_source(x4) -> (x2 = x4)) & n_source(x2) & r_on(e1) & to(e1,x2) & of(x2,x3) & n_income(x3) & Actor(e1,x1) & v_hold(e1) & n_man(x1))