Several adults and children are either sliding down, or waiting at the bottom of a very tall yellow slide.
The family is at the park together.
Severals adults and children being present does not necessarily imply that they are a family.
exists x7.(n_bottom(x7) & (exists e1 s1 s2 s3 x1 x2 x3.(a_either(s3) & Manner(e1,s3) & a_down(s2) & Manner(e1,s2) & Actor(e1,x1) & v_slide(e1) & n_child(x3) & n_adult(x2) & subset_of(x3,x1) & subset_of(x2,x1) & a_several(s1) & Theme(s1,x1)) | exists e2 s4 s5 s6 x4 x5 x6 x8.(at(e2,x7) & of(x7,x8) & n_slide(x8) & a_yellow(s6) & Theme(s6,x8) & a_tall(s5) & Theme(s5,x8) & r_very(x8) & Actor(e2,x4) & v_wait(e2) & n_child(x6) & n_adult(x5) & subset_of(x6,x4) & subset_of(x5,x4) & a_several(s4) & Theme(s4,x4))))
exists p1 x1 x2.(n_park(x2) & n_family(x1) & at(x1,x2) & r_together(x2))