TASK DEFINITION: In this task, given a sentence in the English language, your task is to convert it into English Tokens.
PROBLEM: Seen in the photograph below is Lieutenant (Navy) Armstrong, the Executive Officer of RCSCC 18 Vanguard, in the background, are Vanguard cadets.

SOLUTION: Seen in the photograph below is Lieutenant -LRB- Navy -RRB- Armstrong , the Executive Officer of RCSCC 18 Vanguard , in the background , are Vanguard cadets .

PROBLEM: He announced his candidacy for the 2012 race immediately following the 2008 election.

SOLUTION: He announced his candidacy for the 2012 race immediately following the 2008 election .

PROBLEM: The helicopter had been chartered from the Russian company Vertical-T and all the victims were civilians.

SOLUTION:
The helicopter had been chartered from the Russian company Vertical-T and all the victims were civilians .