diff --git a/data/metall_graph/csv/regex.csv b/data/metall_graph/csv/regex.csv
new file mode 100644
index 0000000..28398ca
--- /dev/null
+++ b/data/metall_graph/csv/regex.csv
@@ -0,0 +1,10 @@
+s,t,times_seen,relevant
+A<T1>,B<T1>,1,true
+A<T1>,B<T2>,2,true
+A<T1>,A<T2>,3,false
+A<T1>,C<T3>,4,false
+B<T1>,B<T2>,5,true
+B<T3>,C<T1>,6,true
+B<T2>,C<T2>,7,false
+B<T1>,A<T1>,8,true
+C<T3>,A<B2>,9,false
\ No newline at end of file
diff --git a/data/metall_graph/pq/regex_0.parquet b/data/metall_graph/pq/regex_0.parquet
new file mode 100644
index 0000000..4c915a0
Binary files /dev/null and b/data/metall_graph/pq/regex_0.parquet differ