Given a document and an entity the task is to select the author's sentiment towards the entity. Sentiments can be Positive, Neutral and Negative. Select Positive if the article expresses a positive view towards the given entity or praises its quality or skills. Select Neutral if the document expresses no clear view towards the entity or has equal amounts of positive and negative statements or expressing some fact/quote by someone else. Select Negative if the article expresses a negative view towards like harsh remarks, criticizing entities action/decision etc. Note that URLs in the text have been replaced with [Link].

What is the sentiment of the following document towards the entity Alan Carter ? The concentration  or number of insulin units in the liquid solution  was labeled as 100 units per milliliter. But they averaged less than half of that  and none met the 95-unit minimum standard  said lead researcher Alan Carter  a pharmacist and adjunct instructor at the University of Missouri-Kansas City School of Pharmacy.
 Carter  thinks the insulin may have gotten too warm somewhere between the factory and the pharmacy  causing some of the molecules to break apart.
 Carter  wondered whether  his  results might help explain why insulin users sometimes find a dose doesn't work as well as normal. Doctors usually attribute that to patient error: not injecting enough insulin before a meal  not following dietary guidelines  or skipping exercise.
 Carter   who had a limited budget for  his  study  acknowledges that it was too small and that  his  results may be flawed. He notified Novo Nordisk and Eli Lilly of his results in hopes someone would do a bigger follow-up study.
Neutral

What is the sentiment of the following document towards the entity Putin ? The White House confirmed Sunday that  Russian President Vladimir Putin  spoke with President Donald Trump in what Russian state media has described as a thank-you call following a CIA tip about a bomb threat in St. Petersburg.
Russia's main state broadcaster  Vesti  said Sunday that  Putin  called Trump to thank  him  for a CIA tip that helped Russian police thwart a terrorist attack in St Petersburg.
According to  Vesti  Putin  asked Trump to thank CIA Director Mike Pompeo for providing the information  and  he  told the U.S. president that "the Russian security services  in the case where they receive information regarding terrorist threats in relation to the U.S. and its citizens  will without question and immediately pass it to their American colleagues."
White House press secretary Sarah Sanders confirmed the call from Putin to Trump took place and said a readout would be provided to the press shortly.
Positive

What is the sentiment of the following document towards the entity Luke Ravenstahl ? In what he described as a "leap of faith " Mayor Luke Ravenstahl of Pittsburgh agreed Monday to shelve his plans for the nation's first tax on college tuition in exchange for an increase in voluntary contributions from local colleges and universities to the city.
 City officials said the mayor also had a promise from university officials to help lobby state lawmakers in Harrisburg for changes to enable the city to raise certain taxes and fees.
 Earlier this month  Ravenstahl said he had asked the universities and other tax-exempt nonprofit organizations to pay $5 million annually to the city  and that in lieu of the tax  he would find the other $10 million by dipping into reserves  cutting services and pushing Harrisburg to increase the commuter tax rate.
 After universities initially turned down his request to increase their voluntary payments to the city  Ravenstahl said he was left with no alternative to imposing a tax. He said the money was needed to pay for pension costs and to offset the roughly $50 million in property taxes that the city forgoes from the tax-exempt status of nonprofit institutions.
 Ravenstahl said the city had already begun tightening its belt.
 "We continue to consolidate services with other governments  achieving cost savings through joint purchasing  joint provision of services and any other avenue we can pursue " he said. "We have reduced our work force by about 1 000 employees. We have stopped issuing new debt  going to a 'pay as you go' capital budgeting system."
 He added: "We have cut everything we can to the bone. Today is not the end of our work together. Today is only the beginning."

Positive