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].

A toddler has been dubbed the real-life Elsa from the Disney film Frozen because she faces a daily battle to keep warm. Gracie Hughes, two, suffers from Raynaud's syndrome, and turns blue when she is exposed to the cold. The condition occurs when small blood vessels in the extremities are over-sensitive to changes in temperature, interrupting the blood supply. During an attack, the extremities become first white and dead looking and may then turn blue and finally red and burning when the blood flow is restored. The condition can cause considerable pain, numbness or tingling. Scroll down for video Two-year-old Gracie Hughes (with her mother Laurie) suffers from Raynaud's syndrome, which means she turns blue when she is exposed to the coldTwo-year-old Gracie Hughes suffers from Raynaud's syndromeCondition occurs when small blood vessels in the extremities are over-sensitive to changes in temperature, interrupting the blood supplyDuring an attack, extremities can turn white, blue and then redIn a bid to help her daughter through her condition, Gracie's mother Laurie has likened her daughter to the Disney film character 
 Question:'She's getting to the age now where she doesn't understand why she has to wear gloves all the time so I tell her she's like _ and Elsa is special, which cheers her up.
Elsa

The wife of a man jailed for killing his own brother has vowed to stand by her man. Mark Lowe, 32, from Skelmersdale, Lancashire, is currently serving a five-year sentence for beating and kicking his brother Wayne to death, after Wayne, then 33, attacked him in his bed with a knife. Mark's wife Sarah is now looking after three young children alone and said: '[Mark] will regret what he did for the rest of his life, because he loved his brother.' Mark Lowe, 32 (left), is currently serving a five year sentence for beating and kicking his brother Wayne (right) to death, but his wife Sarah (bottom) is standing by her manMark Lowe, 32, beat his brother Wayne, 33, to death last SeptemberWayne, who was known for being violent, attacked Mark in bed with a knifeMum-of-three Sarah Lowe insists her husband, a nurse, is a good manMark is now serving a four year eight month prison sentence 
 Question:Mark and _, pictured with two of their children, are both mental health nurses who met in 2004 while working in a nursing home.
Sarah

Tons of rotting fish have filled a lagoon in Rio de Janeiro, Brazil where Olympic rowing and canoeing events will be held during next year's Games. Over the past week, thousands of the silver fish have died and have been scooped out of Rodrigo de Freitas lake, but city authorities and biologists have argued about the cause. More than 37 tons of fish have been collected, according to Rio's waste management company, but there is still an overwhelming stench, sparking complaints from neighbours and passers-by. Clearing: Rio's waste management company said it has cleared more than 37 tons of fish, which have been taken to the city's main dumpTons of dead fish are being cleared from a stinking lagoon in Rio de Janeiro, Brazil, which will host Olympic eventsRotting silver fish have filled Rodrigo de Freitas lake where rowing and canoeing events should take place next yearThere is an overwhelming stench and authorities and biologists have argued about about the cause of the deaths 
 Question:The die-offs are common in _, where rivers, lakes and even the ocean are blighted by raw sewage and garbage.

Rio de Janeiro