Given the task definition and input, reply with output. In this task, you are given a sentence in either Spanish or English. Your task is to determine the language of the input sentence. Input sentences can only be in Spanish or English, and they cannot be in two languages at the same time.

Lastly, I must add that, in the case of drugs, control is more difficult, since the control systems are not so automatic nor so immediate as they are in the case of alcohol levels.
English