TASK DEFINITION: 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.
PROBLEM: Muchos antes que yo me lo han repetido: la Unión Europea no es, no puede ni debe ser sólo economía.

SOLUTION: Spanish

PROBLEM: What doctrines do they involve?

SOLUTION: English

PROBLEM: Indeed there are many sensible proposals put forward in areas where the technology makes it possible to advance.

SOLUTION:
English