advsync: Rephrase a question sentence

index c9c975c..b97e218 100644
@@ -950,7 +950,7 @@ thereby forcing the required ordering on all platforms.
 \label{fig:advsync:S Address-Dependency Litmus Test}
 \end{figure}
 
-But suppose that the dependent operation is a write rather than
+But what happens if the dependent operation is a write rather than
 a read, for example, in the \emph{S}
 litmus test~\cite{JadeAlglave2011ppcmem} shown in
 Figure~\ref{fig:advsync:S Address-Dependency Litmus Test}?