Two workers holding up the tree look around, while the other two work hard with their shovels.
A family plants a memorial tree for their dead relative.
Workers don't have to be family and trees can be planted for many reasons other than for memorial purposes of dead relatives.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(n_shovel(x6) & of(x6,x3) & n_thing(x3) & -(x5 = x5) & n_work(x5) & card_eq_2(x5) & n_look(x3) & of(x3,x4) & n_tree(x4) & a_topic(x1) & with(e1,x6) & a_hard(s2) & Manner(e1,s2) & while(e1,x5) & a_up(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & r_around(x3) & (x1 = x2) & n_worker(x1) & card_eq_2(x1))
all x1 s2 x4 s1.((n_relative(x4) & a_dead(s2) & Theme(s2,x4) & of(x4,x1) & n_thing(x1) & n_tree(x1) & a_memorial(s1) & Theme(s1,x1)) -> exists x2 x3.(a_topic(x2) & for(x2,x4) & for(x2,x1) & n_plant(x2) & of(x2,x3) & n_family(x3)))