Definition: In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Input: Passage: On October 6, 1971, an American combat medic, Jacob Singer, is with the 1st Air Cavalry Division, deployed in a village in Vietnam's Mekong Delta, when his close-knit unit comes under sudden attack. As many of Jacob's comrades are killed or wounded, others exhibit abnormal behavior with some suffering catatonia, convulsions, and seizures. Jacob flees into the jungle, only to be bayoneted by an unseen assailant.
Jacob awakens in the New York City Subway, where an inexplicably locked subway station exit results in him almost being hit by a train. The year is 1975, he works as a postal clerk, and lives in a rundown apartment in Brooklyn with his girlfriend, Jezzie. Jacob misses his old family and experiences visions of them, especially the youngest of his sons, Gabe, who had died in an accident before the war. Jacob is increasingly beset by disturbing experiences and apparitions, including glimpses of faceless vibrating figures, and narrowly escapes being run over by a pursuing car. At a party thrown by friends, he appears to witness an enormous creature penetrating Jezzie before he collapses with a dangerous fever, briefly waking up in another reality where he lives with his wife and Gabe. First-person perspective scenes of apparent flashbacks to his time in Vietnam show Jacob, badly wounded, being discovered by American soldiers before being evacuated under fire in a helicopter.
Output:
What is the first name of the person who collapsed with a fever?