这个句子怎么划分呢？

Question

While attempting to maintain normality through a massive and increasingly effective security presence the government looked for political solutions to the troubles.

Answer 1

While attempting to maintain normality through a massive and increasingly effective security presence, the government looked for political solutions to the troubles. 

主句：the government looked for political solutions to the troubles

从句：while attempting to maintain normality through a massive and increasingly effective security presence