{"schema_definition":"type User { id: ID!, name: String!, posts: [Post!]! }\ntype Post { title: String! }\ntype Query { user(id: ID!): User }","resolver_code":"Query: { user: (_, {id}) => db.users.find(u => u.id === id) },\nUser: { posts: (user) => db.posts.filter(p => p.userId === user.id) }","sample_query":"{ user(id: \"1\") { name posts { title } } }","expected_response":"{\"data\": {\"user\": {\"name\": \"Ada\", \"posts\": [{\"title\": \"Hello World\"}]}}}"}