Add solution

js/continent.js

@@ -4,7 +4,7 @@ fetch("https://countries.trevorblades.com/", {
     "method": "POST",
     "body": JSON.stringify(
         {
-            query: "", // Fill in Query here
+            query: "query continent($code: ID!) { continent(code: $code) { name countries { name code }}}",
             "operationName": "continent",
             "variables": { "code": continentCode }
         }), headers: { "Content-Type": "application/json" }