Context:
Yoon Ji-hye (born November 10, 1979) is a South Korean actress. Yoon made her acting debut in the 1998 horror movie "Whispering Corridors". She has since starred in films such as "Possible Changes" (2004), "No Mercy for the Rude" (2006), and "", as well as the television series "Que Sera, Sera" (2007).
Hypothesis: Yoon Ji-hye made her debut in the 90s
Yes
Context:
Europe's economic environment has altered considerably over the last thirty years, and the economies of European countries have progressively opened up to the global economy. As a result, the competitiveness of the European economies is dependent not just on production costs, but also on the performance of pension and social security systems guaranteeing security for the future.
Hypothesis: Pension and social security systems are necessary.
It's impossible to say
Context:
With Washington hinting it might soften its tough stance to break the deadlock, top US negotiator, Christopher Hill, said the two sides needed to review the situation.
Hypothesis: Christopher Hill often goes by Chris

It's impossible to say