original_query: What defense did Navarro file with the court in February 2011?
query: What defense did Joran van der Sloot's lawyer, Maximo Alonso Altez Navarro, file with the court in February 2011?
answer: Navarro filed a "violent emotion" defense, arguing that Van der Sloot had experienced temporary insanity due to Flores discovering his connection to the Holloway case on his laptop.