diff --git a/helpers/mu/sparql.js b/helpers/mu/sparql.js
index 8ab39f3..dd44540 100644
--- a/helpers/mu/sparql.js
+++ b/helpers/mu/sparql.js
@@ -160,9 +160,18 @@ function sparqlEscapeDateTime( value ){
  * @param { any } value Boolean-like value, anything javascript finds truethy is true.
  * @return { string } Boolean representation for SPARQL query.
  */
-function sparqlEscapeBool( value ){
+function sparqlEscapeBool(value) {
+  if (!typeof value == "boolean") {
+    throw new Error("The value passes to sparqlEscapeBool should be a boolean");
+  }
   return value ? '"true"^^xsd:boolean' : '"false"^^xsd:boolean';
-};
+}
+
+function sparqlEscapeBool2(value) {
+  const booleanValue =
+    value === true || value === 1 || value?.toLowerCase() === "true";
+  return booleanValue ? '"true"^^xsd:boolean' : '"false"^^xsd:boolean';
+}
 
 function sparqlEscape( value, type ){
   switch(type) {