week19.txt: add rdf4j tutorial task

timeline/week19.txt

@@ -3,7 +3,7 @@ Week 19 (04.05.-10.05.)
 
 [~] familiarize yourself w/ some tooling
 
-	[~] run all quries from ulo paper in graphdb
+	[x] run all quries from ulo paper in graphdb
 
 	    -> Some of the example queries require more data than
 	       in the cited imports. In particular, there are zero
@@ -16,7 +16,14 @@ Week 19 (04.05.-10.05.)
 	       joining multiple namespaces and defintions of a given
 	       thing (e.g. the natural numbers).
 
-	[ ] run queries from code
+	[~] run queries from code
+
+	-> I set up a basic Java project that I will use to play with
+	   the programming interface. The docs are in Java, switching
+	   to Scala should not be hard.
+
+	[ ] Look at the RDF4J tutorial [1]
+
 
 [ ] familiarize w/ MathHub infastructure
 
@@ -40,3 +47,5 @@ Week 19 (04.05.-10.05.)
 
 References
 ==========
+
+[1] https://rdf4j.org/documentation/programming/