3M is an entity that is referenced in various emails regarding cleaning and guest arrangements [1] [2] [3] [4] [5] [6]. Lesley Groff sent emails regarding 3M, including one on November 21, 2017, asking how long someone would be in 3M [3]. On January 25, 2018, Lesley Groff emailed Leo about 3M being ready for the next guest [4]. Lesley Groff also emailed on June 11, 2018, about the air conditioning in 3M being fixed and the apartment being cleaned [5]. Additionally, there are emails about cleaning 3M on specific dates, such as October 10, 2017 [1], and December 28, 2018 [6]. Guests arrived at 3M on various dates, including July 25, 2017 [2].