Readded XIP
diff --git a/t/artificial/xip/sentences.xml b/t/artificial/xip/sentences.xml
new file mode 100644
index 0000000..18e7dbc
--- /dev/null
+++ b/t/artificial/xip/sentences.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-model href="span.rng" type="application/xml" schematypens="http://relaxng.org/ns/structure/1.0"?>
+<layer docid="A01_APR.13047" version="KorAP-0.4" xmlns="http://ids-mannheim.de/ns/KorAP">
+  <spanList> 
+    <span from="0" to="130" />
+  </spanList>
+</layer>