Translate the following inference to logic notation: For all x, x_11 is a taxi driver or x_11 is not a bartender. For all x, x_11 is a scientist. There is at least one x for which x_11 is a bartender. Therefore there is at least one x for which x_11 is a scientist and x_11 is a taxi driver.
forall x: P(x) or ~Q(x). forall x: R(x). exists x: Q(x). Therefore exists x: R(x) and P(x).