diff --git a/data/configs/abgb.toml b/data/configs/abgb.toml
index 98a9c69..9bcadba 100644
--- a/data/configs/abgb.toml
+++ b/data/configs/abgb.toml
@@ -4,8 +4,14 @@ id = 10001622
 [[law.classifiers]]
 name = "Theil"
 is_root = true
+#match_function = "containsCaseSensitive"
 match_function = "contains"
 
+#[[law.classifiers]]
+#name = "Abtheilung"
+#is_root = false
+#match_function = "contains"
+
 [[law.classifiers]]
 name = "Hauptstück"
 is_root = false
diff --git a/src/config.rs b/src/config.rs
index 7f792c6..951c61d 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -12,6 +12,7 @@ use crate::paragraph::Parser;
 fn create_classifier(match_function: &str) -> Result<ClassifierApplicable, Error> {
     let func: ClassifierApplicable = match match_function {
         "contains" => Arc::new(contains),
+        "containsCaseSensitive" => Arc::new(contains_case_sensitive),
         "starts_with_roman_number" => Arc::new(starts_with_roman_number),
         "contains_at_start" => Arc::new(contains_at_start),
         "starts_with_number" => Arc::new(starts_with_number),
diff --git a/src/law/responsible.rs b/src/law/responsible.rs
index dc1643b..c3a8279 100644
--- a/src/law/responsible.rs
+++ b/src/law/responsible.rs
@@ -11,6 +11,10 @@ pub fn contains(classifier_name: &str, instance_name: &str) -> bool {
         .contains(&classifier_name.to_lowercase())
 }
 
+pub fn contains_case_sensitive(classifier_name: &str, instance_name: &str) -> bool {
+    instance_name.contains(&classifier_name)
+}
+
 pub fn starts_with_roman_number(_: &str, s: &str) -> bool {
     // Define the prefixes for Roman numerals.
     let roman_prefixes = [