Given the task definition and input, reply with output. This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

In the early 1990s the memory of Genghis Khan with the Mongolian national identity has had a powerful revival partly because of his perception during the Mongolian People's Republic period. Genghis Khan became one of the central figures of the national identity. He is looked upon positively by Mongolians for his role in uniting warring tribes. For example, it is not uncommon for Mongolians to refer to their country as "Genghis Khan's Mongolia", to themselves as "Genghis Khan's children", and to Genghis Khan as the "father of the Mongols" especially among the younger generation. However, there is a chasm in the perception of his brutality. Mongolians maintain that the historical records written by non-Mongolians are unfairly biased against Genghis Khan and that his butchery is exaggerated, while his positive role is underrated.
What recent decade saw brightening of the perception of Genghis Khan in Mongolia?