Context:
Somerset v Stewart (1772) 98 ER 499 (aka "Somersett's case", or in State Trials v.XX "Sommersett v Steuart") is a famous judgment of the English Court of King's Bench in 1772, which held that chattel slavery was unsupported by the common law in England and Wales, although the position elsewhere in the British Empire was left ambiguous. Lord Mansfield decided that:
Hypothesis: In 1772  Wales was part of the British Empire
Yes
Context:
From AFP. Any opinions expressed are those of the authors, and do not necessarily reflect the views of Iraq Business News. It’s a radio talent contest with a mission: showcasing the skills of Mosul’s youth after years of jihadist rule and a months-long battle for the city.
Hypothesis: Mosul has been freed from jihadist rule.
It's impossible to say
Context:
In 1954, in a gesture of friendship to mark the 300th anniversary of Ukrainian union with Russia, Soviet Premier Nikita Khrushchev gave Crimea to Ukraine.
Hypothesis: A gesture of friendship was made to mark a religious holiday.

No