In this task, you are given a context paragraph of the tweet and question. Your task is to generate right answer of given question based on given context tweet paragraph.
Q: Context: Connect the dots: @OPCW sure chlorine used in #Syria, witnesses saw it dropped by helicopters,which only Assad has. Who's responsible? #UNSC Lithuania in UN NY (@LithuaniaUNNY) October 7, 2014 Question: how was the chlorine drooped in syria?
A:
helicopters.