Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: A British man who spent five months fighting against ISIS in Syria has been banned from giving a speech at his old university over fears he encourages others to travel to the region. Macer Gifford, 28, fought with the Kurdish group YPG and was due to give a talk on Tuesday at top London university UCL, organised by Kurdish Society president Kava Kurda. But Union Activities and Events Officer, Asad Khan, said the decision was due to 'concerns an event with a person speaking about their experiences fighting in Syria could lead to others going and fighting in the conflict'.Macer Gifford, 28, fought with the Kurdish group YPG in Northern SyriaHe was due to give a talk about the conflict at UCL on TuesdayHis talk was aiming to 'shine a light' on the ongoing conflict with ISISBut student union chief Asad Khan stopped the event from happeningFor full news coverage on ISIS visit [Link] 
 Question:'In absence of advice from the police, _ indicated that their preference would be to not invite Mr Gifford to speak on this occasion, although the final decision rested with us.'

UCL