Given a sentence, identify the subject and verb of that sentence.
In the sentence "He had already gone to bed," the subject is "He" and the verb is "had gone".
He had already gone to bed.
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:
Given a sentence, identify the subject and verb of that sentence.

### Input:
He had already gone to bed.

### Response:
In the sentence "He had already gone to bed," the subject is "He" and the verb is "had gone".