In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.

Ex Input:
When was the cathedral of santiago de compostela built?

Ex Output:
When did construction start on the cathedral of santiago de compostela?


Ex Input:
Who is the president of south africa now?

Ex Output:
Who is the president of south africa who first took office in 2009?


Ex Input:
When was the lord of the rings written?

Ex Output:

When was The Lord of the Rings trilogy written by JRR Tolkien?