The following truth table defines the logical NAND operation: In 0 0 1 1 In2 In NAND in2 0 1 1 1 0 1 0 1 Draw a two-layer ANN that implements logical NAND. You should work out two versions. The first version uses two input nodes, and sets the threshold to an appropriate value in the output neuron. The second version uses the bias node as an additional input node, and sets the threshold to zero. For both versions, prove your results.