Identify the Boolean function that is defined by the following input$/$output

table. You answer should be in the format of sum of minterms.

Instructions for entering Boolean expressions: to make it easier to enter

Boolean expressions, please use the prime symbol for complement. For

example, $\frac{\stackrel{}{x}}{b}ar(y)$ can be entered as $x^{\text{'}}{y}^{\text{'}},$ while $\frac{?}{\text{b}\text{a}\text{r}}(xy)$ can be entered as $(xy{)}^{\text{'}}.$