What is GraphQL?
GraphQL is an open-source data query language and data manipulation language for APIs, and a query runtime engine.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is GraphQL?
### Input: 
### Response: GraphQL is an open-source data query language and data manipulation language for APIs, and a query runtime engine.