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: Republic of Ireland assistant manager Roy Keane gave a nod to his country's past tournament troubles as they confirmed their place at Euro 2016 with victory over Bosnia-Herzegovina. The Boys in Green ran out 2-0 winners on Monday night at the Aviva Stadium, courtesy of Jonathan Walters' double, to seal a 3-1 aggregate triumph in their qualification play-off and spark celebrations. Keane's last experience of an international tournament with his country came at the 2002 World Cup where was sent home in disgrace following a fall-out at the training camp in Saipan - and he harked back to those darker days of his career as the party started in Dublin on Monday night.Republic of Ireland qualified for Euro 2016 by beating Bosnia-Herzegovina in play-off second leg on MondayJonathan Walters netted twice in Dublin to seal the passage to next summer's European Championship finalsRoy Keane joked about his huge fall-out with manager Mick McCarthy from before the World Cup in 2002At the time, the then-Ireland captain was unhappy with facilities at the Republic's training camp in SaipanAmid the celebrations on Monday, Keane said his side would be fine for the Euros 'as long as we're not in Saipan'Ireland kitman Dick Redmond dressed up as Superman but couldn't convince Keane to don a celebratory t-shirtThe Republic will be in the bottom tier of seeds when the draw for the tournament is made next monthManager Martin O'Neill hailed Keane's impact as No 2 and praised his squad for qualifying for France 2016 
 Question:O'Neill also had praise for assistant _, adding: 'Bringing Roy Keane in is as good a decision as I've made in quite some time.

Roy Keane