A group of people are at an establishment.
A group of people are learning.
You can not infer they are learning.
exists p1 x1 x2.(exists x3.(at(x1,x3) & n_establishment(x3)) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_learn(e1) & of(x1,x2) & n_people(x2) & n_group(x1))