peoples at the ground using laptop
people with a computer
People using laptop means the same as people with a computer  since laptop is a form of computer.
exists e1 x1 x2 x3 x4.(n_ground(x2) & a_topic(x1) & at(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_use(e1) & n_laptop(x4) & (x2 = x3) & n_people(x1))
exists x1 x2.(a_topic(x1) & with(x1,x2) & n_computer(x2) & n_people(x1))