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].

Ex Input:
(CNN) The Marine Corps' fighting ability is undermined by the more than 30,000 active Marines and veterans involved in a private Facebook group being investigated for allegedly posting explicit photos of women in the military without their consent, a former Navy secretary told CNN on Friday. "There's no good excuse," Ray Mabus said on CNN's New Day. "The Marine motto is 'semper fidelis,' always faithful, and what these Marines did was to be unfaithful to their fellow Marines." "Marines look after each other, Marines have each other's back. Look at what the commandant of the Marine Corps said about this, this makes us a less effective fighting force," Mabus said, referring to a video statement posted Tuesday by Gen. Robert Neller.Ray Mabus: "What these Marines did was to be unfaithful to their fellow Marines"Investigation should determine how "Marines United" group developed, he said 
 Question:"These Marines, these veterans, that have participated in this have attacked fellow _, and that is inexcusable in a fighting force, and particularly in the Marines, who are so special."

Ex Output:
Marines


Ex Input:
Suspect: Mark Speer, 44, from Indiana, faces three child molestation charges and federal child pornography counts The live-in girlfriend of an accused child molester from Indiana allegedly had helped the suspect arrange sexual encounters with young girls, according to recently unsealed court documents. Mark Speer, 44, a plumber from Lafayette, was arrested in August on suspicion of molesting a 3-year-old girl and creating child pornography videos. In the course of the investigation into the claims, police received permission to access Speer's private messages on Facebook and the dating site Zoosk exchanged between him and his girlfriend, Rebecca Kaster. Search warrants released last month state that Kaster had assisted her boyfriend in scheduling his illicit encounters with children.Mark Speer, 44, from Indiana, faces three child molestation charges and federal child pornography chargesSpeer's live-in-girlfriend, Rebecca Kaster, is suspected of helping him arrange encounters with victims onlineKaster, who has not been charged, said she and Speer were in an open relationshipSpeer was arrested in August after six videos featuring children were found on his phoneOne clip showed a 3-year-old girl eating ice cream in the nude in his house 
 Question:One Facebook message sent from Kaster's account to _ December 22, 2013, read: 'i think i have the best chance getting her or the younger [girl]...so far that’s all i got.'

Ex Output:
Mark Speer


Ex Input:
It is a mystery that has baffled the world's top scientists - why are there 'blood streaks' on one of Saturn's moons? 'It's clearly painted on the surface in some way that we do not as yet understand,' says Paul Schenk of the Lunar and Planetary Institute, who presented the results of the latest investigation at the American Geophysical Union's annual meeting. 'We basically have a little mystery.' Cassini first spotted these mysterious red lines, which stretch 1,000 of miles across, scratched across the surface of Saturn's icy moon Tethys. The unexplained arc-shaped 'blood trails' are among the most unusual colour features on Saturn's moons to be revealed by the probe.The Cassini probe spotted mysterious red lines on Tethys, several hundred miles long and only a few miles wideScientists thought they may be the result of some type of deformation on the moon caused by a strange orbitBut simulations ruled out this possibility, and now astronomers say fractures unseen by Cassini may be the cause 
 Question:This may be because its proximity to Saturn causes more tidal warming, and that warming kept _ partially molten longer.

Ex Output:

Tethys