Task: API queries data from GraphQL

n8n workflow JSON:
{"nodes":[{"name":"GraphQL","type":"n8n-nodes-base.graphql","position":[800,300],"parameters":{"query":"=query {\n  country(code: \"{{$node[\"Webhook\"].data[\"query\"][\"code\"].toUpperCase()}}\") {\n    name\n    phone\n    emoji\n  } \n}","endpoint":"https://countries.trevorblades.com/","requestMethod":"GET","responseFormat":"string"},"typeVersion":1},{"name":"Function","type":"n8n-nodes-base.function","position":[1000,300],"parameters":{"functionCode":"items[0].json = JSON.parse(items[0].json.data).data.country;\nreturn items;"},"typeVersion":1},{"name":"Set","type":"n8n-nodes-base.set","position":[1200,300],"parameters":{"values":{"string":[{"name":"data","value":"=The country code of {{$node[\"Function\"].data[\"name\"]}} {{$node[\"Function\"].data[\"emoji\"]}} is {{$node[\"Function\"].data[\"phone\"]}}"}],"boolean":[]},"keepOnlySet":true},"typeVersion":1},{"name":"Webhook","type":"n8n-nodes-base.webhook","position":[600,300],"parameters":{"path":"webhook","options":{},"responseMode":"lastNode"},"typeVersion":1}],"connections":{"GraphQL":{"main":[[{"node":"Function","type":"main","index":0}]]},"Webhook":{"main":[[{"node":"GraphQL","type":"main","index":0}]]},"Function":{"main":[[{"node":"Set","type":"main","index":0}]]}}}