The circuit has five input signals and one output signal. The five input lines are labeled W, X, Y, Z, and E, and the output line is labeled F. E is used to enable or disable the circuit; thus, when E=0, the circuit is disabled and F is always 0. When E =1, the circuit is enabled, and F is determined by the value of the four input signals W, X, Y, and Z, where W is the most significant bit. If the value is odd, then F=1; otherwise, F=0. I just do not understand how to construct the truth table for this.