Gardener digs through the dirt for potatoes.
A gardener looks for potatoes.
In order for a gardener to look (looks) for potatoes, he must dig (digs) through the dirt, as potatoes grow in dirt.
exists e1 x1 x2 x3.(n_dirt(x2) & ne_nam_gardener(x1) & for(e1,x3) & n_potato(x3) & through(e1,x2) & Actor(e1,x1) & v_dig(e1))
exists e1 x1 x2.(for(e1,x2) & n_potato(x2) & Actor(e1,x1) & v_look(e1) & n_gardener(x1))