report: intro: link sections in final paragraph

doc/report/introduction.tex

@@ -52,8 +52,14 @@ over different Git repositories, imported them into a database and
 then experimented with APIs for accessing that data set.
 
 The main contribution of \emph{ulo-storage} is twofold. First, (1)~we
-built up various infrastructure components that can make up building
-blocks in a larger tetrapodal search system. Second, (2)~we ran sample
-prototype applications and queries on top of this interface. While the
-applications themselves are admittedly not very interesting, they can
-give us insight about future development of the upper level ontology.
+built up various infrastructure components for making organizational
+knowledge queryable.  These components can make up building blocks of
+a larger tetrapodal search system. Design and implementation are
+discussed in Section~\ref{sec:implementation}.  Second, (2)~we ran
+sample prototype applications and queries on top of this
+interface. While the applications themselves are admittedly not very
+useful in itself, they can give us insight about future development of
+the upper level ontology. These applications and queries are the focus
+of Section~\ref{sec:applications}. A summary of encountered problems
+and suggestions for next step concludes this report in
+Section~\ref{sec:conclusion}.