diff --git a/pregelix/pregelix-example/data/webmap/webmap_link.txt b/pregelix/pregelix-example/data/webmap/webmap_link.txt
new file mode 100644
index 0000000..2bd5a0e
--- /dev/null
+++ b/pregelix/pregelix-example/data/webmap/webmap_link.txt
@@ -0,0 +1,20 @@
+0 1
+1 1 2
+2 1 2 3
+3 1 2 3 4
+4 1 2 3 4 5
+5 1 2 3 4 5 6
+6 1 2 3 4 5 6 7
+7 1 2 3 4 5 6 7 8
+8 1 2 3 4 5 6 7 8 9
+9 1 2 3 4 5 6 7 8 9 10
+10 11
+11 11 12
+12 11 12 13
+13 11 12 13 14
+14 11 12 13 14 15
+15 11 12 13 14 15 16
+16 11 12 13 14 15 16 17
+17 11 12 13 14 15 16 17 18
+18 11 12 13 14 15 16 17 18 19
+19 0 11 12 13 14 15 16 17 18 19