Context:
Halperin v. Kissinger was a court case filed by Morton Halperin against National Security Advisor Henry Kissinger, who approved wiretapping Halperin's home and White House office, starting in 1969. Halperin dropped the case after Kissinger publicly apologized on November 13, 1992.
Hypothesis: Halperin v. Kissinger was studied by jefferson
It's impossible to say
Context:
How to avoid being assaulted in the street<br>Be fully aware of your surroundings. People who are visibly distracted by their cell phones become easy targets for pickpockets and other criminals. Keep an eye on what is going on around you at all times so that you can better detect suspicious activity and protect yourself and your belongings.
Hypothesis: Being alert is an important part of staying safe on the streets. 
Yes
Context:
Inteligencia de la Gendarmería Nacional Argentina ("Argentine National Gendarmerie Intelligence") is the intelligence service of the Argentine National Gendarmerie, commonly referred as SIGN ("Servicio de Inteligencia de la Gendarmería Nacional", National Gendarmerie Intelligence Service) inside of the Intelligence Secretariat.
Hypothesis: SIGN stands for Servicio de Inteligencia de la Gendarmeria Nacional.

Yes