Draw an AND$/$OR graph $($goal tree$)$ for each of the statements below:

I. Z Y X W

II$.((($P$1$ Q$1)$ S$1)($P$2$ Q$2)$ S$2))$ T$)$

Draw an AND$/$OR graph$($goal free$)$ for each of the Statement below:

b$)($:$(((P_1^{{?}^{?}}{Q}_1)S_1)vv(P_2{Q}_2)S_2)\}$