medium_graphql_schema_gist_11.js

const schema = `
type Node {
	id: ID!
	creationDate: String
}

type Person inherits Node {
	firstname: String!
	middlename: String
	lastname: String!
	age: Int!
	gender: String 
}

type Teacher inherits Person {
	title: String!
}

type Student inherits Person {
	nickname: String!
}`