2 men, a woman and a child are taking a boat to the water.
A family enjoys a boat trip on their vacation.
There's no implication that the 2 men, woman, and child are all family and taking a boat to the water doesn't imply they're on vacation.
exists e1 x1 x2 x3 x4 x5 x6 x7.(n_water(x7) & to(e1,x7) & Theme(e1,x6) & Actor(e1,x1) & v_take(e1) & n_boat(x6) & subset_of(x3,x1) & subset_of(x5,x3) & n_child(x5) & subset_of(x4,x3) & n_woman(x4) & subset_of(x2,x1) & n_man(x2) & n_date(x2) & a_date_day_02(x2) & a_date_day_02(x2))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & on(x2,x4) & n_vacation(x4) & of(x4,x1) & n_thing(x1) & n_trip(x2) & of(x2,x3) & n_boat(x3) & n_family(x1))