Almost 700 bicyclists were killed by
cars in 2011 is a topic sentence

Riding bicycles near cars is dangerous-the topic sentence.

Almost 700 bicyclists were killed by cars in 2011 -the evidence.

For that reason bikes should stay on bike paths in parks-the concluding sentence.

the informational article provides an insider's view of the brown vs. board of education case; the perspective of the greenberg interview is more distant.

the greenberg interview suggests that brown vs. board of education was a very important case; the informational article does not.

the   informational article suggests that brown vs. board of education was a very important case; the greenberg interview does not.

hope this you. if not then i'm sorry but i'm glad i could at least .