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: Forward Theo Walcott claims Arsenal's Champions League victory over Bayern Munich will have sent a clear message to their rivals that the Gunners mean business this season. The runaway Bundesliga league leaders were defeated 2-0 at the Emirates Stadium on Tuesday night to give Arsene Wenger's men their first European win and keep alive hopes of qualification for the knockout stages. It was a third straight victory for Arsenal, who impressed in beating both Manchester United and Watford, with the north London club now second in the Barclays Premier League table, just two points behind Manchester City. Walcott feels inflicting a first defeat of the campaign on Pep Guardiola's side will serve as a warning of Arsenal's intentions.Arsenal produced impressive performance to defeat Bayern MunichTheo Walcott believes Gunners showed rivals they mean businessThe England star also praised team-mate Petr Cech's display in goalREAD: Arsenal fear Aaron Ramsey's hamstring horror will leave him sidelined for a monthChampions League 2015-16: Latest news, scores, fixtures and highlights 
 Question:'You play against the best in the Champions League, _ are a top, top class team, but we showed our class,' said the England international.

Bayern Munich