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. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

[Q]: (CNN) Since the discovery of dark streaks on the slopes of Mars in 2011, astronomers have been excited about potential evidence of water beneath the surface of the red planet. If there are subsurface water flows on Mars, they could allow life -- even on a microbial level -- to exist as well. But further study of these recurring slope lineae, known as RSL, is revealing something else. Those dark streaks may be the result of granular flows like sand and dust, according to a study published Monday in the journal Nature Geoscience. The study is the product of a research team made up of representatives from the US Geological Survey, the Planetary Science Institute, the University of Arizona and Durham University in England.The flows correlate more with sand on active dunes rather than subsurface waterResearchers studied flows at 10 sites 
 Questions:Earth is the only analog we have for _, but Mars obviously behaves differently, the researchers said. (A) CNN (B) Mars (C) RSL (D) Nature Geoscience (E) US Geological Survey (F) Planetary Science Institute (G) University of Arizona (H) Durham University (I) England
[A]: (B)


[Q]: When they met in an online IVF support group back in 2011, Andrea Rivas and Sandi Palmisano were two women struggling to get pregnant. They longed for children and believed if they could at least have one healthy baby each, they'd be happy. Fast forward four years and the two women from Martinsburg, West Virginia have six babies between them – three sets of twins. And all of them were carried by Andrea. Their story is a miraculous one of hope and friendship. In 2014 Andrea made headlines when she gave birth to Sandi's children EmmaLee and Grayson after agreeing to become a gestational carrier for Palmisano when a medical condition prevented her from carrying an embryo to term.Andrea Rivas and Sandi Palmisano, both from Martinsburg, W Va, met through an online IVF support groupAndrea, 30, and her husband Mark, 41, had twins through IVF but Sandi, 47, and her husband Philip, 45, failed in three cycles - then Andrea stepped in to become a surrogateBut months after giving birth to Sandi's twins, Andrea and her husband Mark conceived naturally - and amazingly were told they would have twins againShe gave birth in March almost a year to the day since giving birth to Sandi and Philip's twinsSandi tells Daily Mail Online: 'Between the two of us we have six babies. It's almost impossible to put into words.' 
 Questions:The two women were soon best friends and when Andrea found out she was pregnant in June 2011 after a second round of IVF the first person she told after her husband was _. (A) IVF (B) Andrea Rivas (C) Sandi Palmisano (D) Martinsburg (E) West Virginia (F) Andrea (G) EmmaLee (H) Grayson (I) Palmisano (J) W Va (K) Mark (L) Philip (M) Daily Mail Online
[A]: (C)


[Q]: Baltimore, Maryland (CNN) -- President Obama and House GOP leaders promised greater efforts to step back from the partisan brink Friday, acknowledging that Washington's toxic political climate has made it increasingly tough to tackle major problems. The pledge was immediately called into question, however, as the two parties repeatedly expressed sharply differing viewpoints during a rare meeting at a House Republican retreat in Baltimore. Obama accepted an invitation from House GOP leaders to address their caucus. His speech Friday was followed by an often pointed question-and-answer session. "House Republican leaders are grateful for [Obama's] willingness to come ... and have a frank and honest conversation," said Rep. Mike Pence, R-Indiana. "We welcome the dialogue with the president."NEW: House Minority Leader John Boehner says the day "went very well"President Obama says stimulus plan saved jobs in GOP districtsObama says some Republicans acted as if health care plan was "some Bolshevik plot"Obama says Democrats, Republicans both are to blame for "sour climate" on Capitol Hill 
 Questions:"Both sides can take some blame for a sour climate on Capitol Hill," Obama said, adding that _ and Republicans need to be careful in choosing their rhetoric. (A) Baltimore (B) Maryland (C) CNN (D) Obama (E) House (F) GOP (G) Washington (H) Republican (I) Mike Pence (J) R-Indiana (K) John Boehner (L) Republicans (M) Bolshevik (N) Democrats (O) Capitol Hill
[A]:
(N)