Write 3 abstracts ( not more than 100 words each).http://web.stanford.edu/group/sixdegrees/issues/sd-fall03-full.pdf
From this link above you have to choose any two articles and write 2 abstracts on them. Then for the third abstract refer to this article http://www.theguardian.com/world/2014/jun/28/india-controversial-forest-coalmine-essar-energy.

These are some rules to follow:
An effective abstract has the following qualities:
1) It contains one or more precisely worded, concise, and lucid paragraphs.
2) Follows the same order as the paper, i.e. contains an introduction, body, and conclusion structure.
3) Follows strictly the chronology of the article, paper, or report.
4) The information provided is well connected
5) Does not add extra information that is not present in the article
Can be easily grasped by a wide audience..