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].

Q: (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.

A: BPA
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Q: It is the game which, ultimately, could define the success or otherwise of Martin O’Neill and Roy Keane’s expensive Republic of Ireland tenure. Installed amid much fanfare 18 months ago, £1million-per-year O’Neill and his assistant Keane – with a £600,000 salary - were given a remit of qualification for Euro 2016, a task made easier by the expansion to a 24-team format. Defeat against Poland at the Aviva Stadium on Sunday, however, would all but render redundant any hope of automatic progression to next summer’s finals in France. It would be they and Scotland left to do battle for the play-off berth.Ireland play Poland in a Euro 2016 qualifier at the Aviva Stadium on SundayMartin O'Neill's side are three points behind group leaders PolandThe Ireland manager has been criticised for failing to make an impactO'Neill acknowledges significance of the game in relation to qualification 
 Question:The _ players are out through their paces in preparation for the Euro 2016 clash.

A: Republic of Ireland
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Q: A British ISIS fighter, who used to live at home with his mother and work as a security guard in Morrisons, appears to be living as a hopeless loner in Syria. According to his social media page, Omar Hussain, has real difficulty completing the most basic daily jobs including peeling potatoes for his dinner and washing his clothes. Avidly recording his mundane life through an array of pictures and essays, Hussein seems to be a lonely, bored fighter, scrounging off ISIS without ever fighting on the frontline. Known as Abu Saeed al-Britani or Awlaki, Omar Hussain told BBC Newsnight last August: 'I hate the UK, the only reason why I would intend to return to the UK is when I want to come and plant a bomb somewhere.'Omar Hussain posts pictures of his terrible cooking and love of chocolateThe 27-year-old spends his time feeding his cat and going to the poolHussain initially joined Jabhat al-Nusra but switched to ISIS after just four monthsHe appeared in an ISIS propaganda video, urging Muslims to join ISIS 
 Question:He also showed off his photos of himself lazily lounging by a swimming pool in _.

A:
Syria
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