diff --git a/tool/src/org/antlr/v4/misc/Triple.java b/tool/src/org/antlr/v4/misc/Triple.java
new file mode 100644
index 000000000..d4d4b8671
--- /dev/null
+++ b/tool/src/org/antlr/v4/misc/Triple.java
@@ -0,0 +1,10 @@
+package org.antlr.v4.misc;
+
+public class Triple<A,B,C> extends Pair<A,B> {
+	public C c;
+	public Triple(A a, B b, C c) {
+		super(a,b);
+		this.c = c;
+	}
+
+}