Article: Wary of protests, the Indian authorities have decided to shorten the route of the relay in New Delhi, and have given it the security normally associated with Republic Day celebrations, which are considered terrorist targets. Chinese intelligence's expectations of points on the relay route that would be particularly 'vulnerable' to protesters were presented to the Indian ambassador to Beijing, Nirupama Sen. The Indian media responded angrily to the news that the ambassador, a distinguished lady diplomat, was summoned to the Foreign Ministry at 2 am local time; the news was later denied by anonymous sources in Delhi. The Indian media reported that India's Commerce Minister, Kamal Nath, cancelled an official trip to Beijing in protest, though both Nath and Chinese sources have denied it.

Now answer this question: The Chinese presented a list of vulnerable relay locations to who?
Nirupama Sen.