\item \self Given is the following formula in predicate logic
$$\phi = \forall x \exists y \Bigl(
\bigl(
Q(x,y) \wedge P(x,y)
\bigr)
\implies
\bigl(
R(y, x)  \wedge P(x,y)
\bigr)
\Bigr). $$
Draw the syntax tree for $\phi$.