\subsection{Foreign Inclusion}
-Consider some $D$ s.t. $\patchof{D} = \foreign$. $D \neq C$.
+Consider some $D \in \foreign$. $D \neq C$.
So by Desired Contents $D \isin C \equiv D \isin L$.
By Foreign Inclusion of $D$ in $L$, $D \isin L \equiv D \le L$.