Given a sentence, an entity and its sentiment towards the entity, verify if it is the correct sentiment towards the entity. Answer should be yes or no. Note that URLs in the text have been replaced with [Link].
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Question: Verify if the sentiment of the following document towards the entity Tim Clark is Neutral .  Clark  says international demand for air travel and aircraft have skyrocketed since the first of more than 120 Open Skies agreements were signed in 1992.

Answer: yes


Question: Verify if the sentiment of the following document towards the entity Varee Bradford is Negative .  Bradford faces a maximum prison term of five years on the conspiracy charge and 10 years on each of the document fraud counts. Tangchaiwanna is only charged with immigration fraud conspiracy  and could face a maximum five years.

Answer: yes


Question: Verify if the sentiment of the following document towards the entity Jenny Chang is Neutral .  She has already begun a Phase II clinical trial of the drug  enrolling nine patients with metastatic breast cancer  and she is looking for more.

Answer:
no