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.

Example Input: 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:But even the doctor was shocked when the ultrasound revealed that _ was having twins, again. (A) IVF (B) Andrea Rivas (C) Sandi Palmisano (D) Martinsburg (E) West Virginia (F) Sandi (G) EmmaLee (H) Grayson (I) Palmisano (J) W Va (K) Mark (L) Philip (M) Daily Mail Online
Example Output: (B)

Example Input: (CNN) After a year of mechanical breakdowns plaguing its $360 million littoral combat ships, the US Navy has announced a major overhaul of the program that will include designating the first four of the ships as testing vessels and limiting their overseas deployments to emergencies. The Navy's announcement came less than two weeks after it revealed breakdowns in two of the ships, the USS Freedom (LCS 1) and USS Coronado (LCS 4). Those followed mechanical failures in the USS Fort Worth (LCS 3) and USS Milwaukee (LCS 5), all since December. The new deployment plan for the LCS fleet isn't a response to the breakdown issues, Navy spokesman Lt. Kara Yingling told CNN.The ships have suffered four breakdowns in the past yearFirst four LCS will be turned into testing vesselsNavy expected to have 28 LCS in fleet by 2023 
 Questions:Previously, the _ were designed to be able to switch among those missions. (A) US Navy (B) Navy (C) USS Freedom (D) LCS 1 (E) USS Coronado (F) USS Fort Worth (G) USS Milwaukee (H) Kara Yingling (I) CNN
Example Output: (D)

Example Input: (CNN) Aaron Sheldon has never particularly enjoyed riding the bus. But to his young son, Harrison, it is an adventure. "One day we're on the bus downtown, and I'm just sitting there looking at him and he's just in awe of such a mundane and pedestrian task," said Sheldon, a photographer who lives in Columbus, Ohio. It reminded him that even the most ordinary acts can seem extraordinary to someone experiencing it for the first time. "I wanted to try to capture that sense of wonderment that kids have just in our everyday world," Sheldon said. He didn't know the best way to go about it, though, until later that week when Harrison -- 3 at the time -- got an ear infection and had to go to the doctor's office.Aaron Sheldon photographed his son around town in an astronaut costumeThe project is a reminder that children are explorers still learning the world around them 
 Questions:Many of the locations were inspired by questions _ asked his father about astronauts. (A) CNN (B) Aaron Sheldon (C) Harrison (D) Sheldon (E) Columbus (F) Ohio
Example Output:
(C)