Here is a piece of text: EAST TROY — A Mukwonago man accused in a brutal attack on a 41-year-old man who was an acquaintance of his estranged wife was in court Monday, April 15 for his preliminary hearing and arraignment.
During the hearing, a sergeant testified, and probable cause was found for further proceedings. A plea of not guilty by mental disease or defect was entered, and an “NGI” evaluation was ordered. A status conference was set for May 28.
The attack left the 41-year-old victim with a severe head injury. Prosecutors said he was beaten so viciously, doctors had to remove part of his skull.
It happened in East Troy on April 3.
Police said just before 10 a.m. on that Wednesday morning, officers were dispatched the area near County Road J and East Shore Road in East Troy for a report of an injured person. They found the 41-year-old victim with a severe head injury “being cradled by a female who was yelling at a second male who was sitting on the front steps,” a criminal complaint indicated. That second male was identified as Sevilla.
The victim was taken to Froedtert Hospital by helicopter, where a portion of his skull was removed by doctors to relieve brain swelling. He was in the ICU, but was moved — and faces a long road to recovery from serious injuries.
The complaint said Sevilla’s estranged wife indicated they had been separated for about two weeks following an incident where Sevilla had been physically abusive with her. She said she went to the home that day to retrieve a birthday present her mother had left for her, along with some of her personal belongings — and she asked the victim to come with her. At the home, she said she went inside while the victim stayed in the yard. She said Sevilla began to yell at the victim — exiting the home and arguing with him face-to-face. She said eventually, they stopped arguing and Sevilla went back into the house. She said as she walked toward her vehicle, Sevilla exited the home again — this time with a baseball bat. The argument continued, and the woman said she tried to get between Sevilla and the victim, and Sevilla shoved her to the ground. She said the victim told Sevilla not to put his hands on his estranged wife, and Sevilla shoved the victim ot the ground and repeatedly struck him in the head with the baseball bat. The woman said she ran to her vehicle and called 911 while Sevilla went back inside.

Based on the text material above, generate the response to the following quesion or instruction: Based on the information provided, what do you think are the implications of the plea of not guilty by mental disease or defect, and how might this affect the outcome of the case?
This prompt doesn't seem malicious.