In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

Input: Consider Input: (CNN) Your "BPA-free" plastic product may be no safer than the product it replaced, says a new UCLA study that analyzed the impact of a common BPA alternative on zebra fish embryos. The study joins a small but growing group of similar research sounding the alarm about so called "BPA-free" alternatives. "Our findings are frightening and important," said senior author and reproductive endocrinologist Nancy Wayne. "Consider it the aquatic version of the canary in the coal mine." After decades of animal research linked BPA (Bisphenol A), a known endocrine disruptor, to problems with brain and reproductive development, early puberty and a rise in breast and prostate cancer, many manufacturers stopped using the chemical to harden plastics, replacing it with "BPA-free" alternatives. The most common replacement is BPS (Bisphenol S), said Wayne.BPA-free alternatives may be no safer than BPA, say researchersMost common alternative, BPS, linked in study to disruptions of estrogen and thyroid hormones 
 Question:In addition to the effect on estrogen, the study also found both _ and BPS affected the thyroid hormone system.

Output: BPA


Input: Consider Input: From awkwardly handing a beggar some change, to failing at eating a bacon sandwich, it is fair to say Labour spin doctors have so far failed to make Ed Miliband look cool. But now Twitter users are attempting to give the somewhat uninspiring party leader a makeover, by editing his face on to famous men's bodies. From Hollywood legends Marlon Brando and Harrison Ford, to astronaut Neil Armstrong and even TV's latest heart-throb Poldark, these images prove there is nothing that photoshop cannot achieve. Scroll down for video Ed, Ed Miliband: In an attempt to make the Labour leader look cool, Twitter users have begun editing his face on to the body of famous men, including Daniel Craig as James Bond in movie Casino RoyaleEd Miliband has history of appearing awkwardly in front of the cameraTwitter account aims to reinvent Labour leader as a symbol of coolMiliband's face edited on to famous men's bodies such as Daniel Craig 
 Question:Cool _, which was created just last Saturday, has already posted 45 images of the Labour leader, and has attracted 3,500 followers.

Output: Ed Miliband


Input: Consider Input: (CNN) Mitt Romney has added his voice to the chorus of Republicans who are dismayed that an ignorant demagogue such as Donald Trump could be poised to capture the presidential nomination of their grand and noble party. In a speech Thursday morning, Romney said, "Donald Trump is a phony, a fraud. His promises are as worthless as a degree from Trump University." He laid out a comprehensive case for why Republicans should reject Trump and pick one of the other candidates still in the race. But before we start lauding Romney for being a statesmanlike voice of reason and moderation, it's worth remembering a few things about him.Paul Waldman: Romney, GOP have used same ugly tactics as Trump, only with more politesseHe says Romney's 2012 campaign used racial code words, bullying mightTrumpism is GOP conservatism stripped of its veneer of subtlety, Waldman says 
 Question:It may not have been quite as appalling as what Trump is doing now, but in many ways it was similar, the only difference being that Trump says out loud what Republicans such as _ prefer to imply.


Output: Mitt Romney