TASK DEFINITION: You are given two sentences(Sentence1 and Sentence2). Answer "Yes" if these sentences are a paraphrase of one another, otherwise answer "No".
PROBLEM: Sentence1: Foreigners board helicopters for evacuation from the European Union compound in Monrovia , Liberia , on Monday ., Sentence2: French troops defend a group of foreigners as they board helicopters for evacuation from the European Union compound in Monrovia , Liberia .

SOLUTION: No

PROBLEM: Sentence1: But tropical storm warnings and watches were posted today for Haiti , western portions of the Dominican Republic , the southeastern Bahamas and the Turk and Caicos islands ., Sentence2: Tropical storm warnings were in place Thursday for Jamaica and Haiti and watches for the western Dominican Republic , the southeastern Bahamas and the Turks and Caicos islands .

SOLUTION: Yes

PROBLEM: Sentence1: Researchers found that people 65 and older who had fish once a week had a 60 % lower risk of Alzheimer 's than those who never or rarely ate fish ., Sentence2: Older people who eat fish at least once a week could cut their risk of Alzheimer 's by more than half , a study suggests .

SOLUTION:
Yes