A teacher assists a student in a computer lab.
A teacher helps the student with the math problem on the computer
Assisting a student on the comupter does not imply helping with a math problem.
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_assist(e1) & in(x2,x3) & n_lab(x3) & of(x3,x4) & n_computer(x4) & n_student(x2) & n_teacher(x1))
exists e1 x1 x2 x3 x4 x5.(n_computer(x5) & n_problem(x3) & of(x3,x4) & n_math(x4) & n_student(x2) & Theme(e1,x2) & Actor(e1,x1) & v_help(e1) & with(x2,x3) & on(x3,x5) & n_teacher(x1))