[Q]: Sentence: Consent by all parties to the treaty to a particular interpretation has the legal effect of adding another clause to the treaty this is commonly called an 'authentic interpretation'. Question: Consent by all parties to a treaty to a particular interpretation of the treaty has what legal effect?
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[A]: yes

[Q]: Sentence: In March 2006, the foundation announced a US$5 million grant for the International Justice Mission (IJM), a human rights organization based in Washington, D.C., US to work in the area of sex trafficking. Question: What would the grant allow the IJM to do
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[A]: no

[Q]: Sentence: To establish the meaning in context, these judicial bodies may review the preparatory work from the negotiation and drafting of the treaty as well as the final, signed treaty itself. Question: In addition to the preparatory work from the drafting and negotiation of a treaty, what might arbiters review when resolving a dispute over the interpretation of a treaty?
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[A]:
yes