# Empty line on a slide in Latex Beamer

I am using Latex Beamer for creating a presentation.

On one slide I have

\frame
{
\frametitle{fdjsljklfdjs}
What is fdjsljklfdjs
\begin{itemize}
\item item one
\item item one
\end{itemize}

Why do we want to know it
\begin{itemize}
\item item one
\item item one
\item item three
\end{itemize}
}

I would like to have space between the first itemize block and the second question. However, if I try \\ or \newline, I get a pdflatex parsing error:

! LaTeX Error: There's no line here to end.

How can I get an emtpy line?

-