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: Producers from the ABC did attempt to contact 'people familiar' with Zaky Mallah before they allowed him to ask a question on the panel program Q&A, however, they failed to review his recent social media posts. According to a report by the Department of Communications, attempts to contact Mr Mallah's associates were 'unsuccessful' so the program's producers chose to base their decision on three other factors- previous experiences with Mr Mallah, the advice of an ABC journalist and a review of a recent television appearance. It was decided 'he was not dangerous, would not be disruptive and would be a suitable audience member to ask a question'.A report from the Department of Communications found that producers from Q&A did attempt to contact people familiar with Zaky MallahHowever, they failed to identify explicit tweets he sent to female journalistsThe report found Mallah has made 'extensive media appearances' since his conviction for threatening ASIO officialsThe ABC's Board formally warned executive producer, Peter McEvoyThe board said Mallah should have been cut given his criminal backgroundMallah clashed with parliamentary secretary Steve Ciobo about citizenshipHe was the first Australian charged under anti-terror laws back in 2005 
 Question:_, in 2005, was cleared of terrorism related charges involving a suicide attack on a commonwealth building.

Zaky Mallah