Consider the following argument: (1) All whales are mammals (2) All mammals are warm-blooded Therefore, (3) All whales are warm-blooded First, substitute each of the terms in the argument (viz., whales, mammals, warm-blooded) with its corresponding variable (viz., G1, G2, G3). Then, fill in the blanks using the variables instead of the terms. Make sure to preserve the structure of the original argument by being consistent with variable assignments. (1) All are . (2) All are . Therefore, (3) All are .