1. A method comprising: receiving, by a computer processor of a computing device from RFID tags embedded in sensors, first event data associated with a first plurality of events detected by said sensors, said computer processor controlling a cloud hosted mediation system comprising an inference engine software application, a truth maintenance system database, and non monotonic logic, wherein said non monotonic logic comprises code for enabling a Dempster Shafer theory; associating, by said computer processor, first portions of said first event data with associated RFID tags of said RFID tags; deriving, by said computer processor executing said inference engine software application, first assumption data associated with each portion of said first portions of said first event data, wherein said first assumption data comprises multiple sets of assumptions associated said plurality of events, wherein each set of said multiple sets comprises assumed event conditions and an associated plausibility percentage value, and wherein at least two sets of said multiple sets is associated with each event of said plurality of events; executing, by said computer processor executing said non monotonic logic, the Dempster Shafer theory with respect to a first pair of sets of said multiple sets with respect to a first event of said plurality of events; generating, by said computer processor based on results of said deriving and said executing, an initial recommendation for said event, said initial recommendation associated with a first selected set of said first pair of sets, said first selected set comprises a first plausibility percentage value; retrieving, by said computer processor from said truth maintenance system database, previous assumption data derived from and associated with previous portions of previous event data retrieved from said RFID tags embedded in said sensors, said previous assumption data derived at a time differing from a time of said deriving, said previous event data associated with previous events occurring at a different time from said first plurality of events; executing, by said computer processor, said non monotonic logic with respect to said first assumption data and said previous assumption data; additionally executing, by said computer processor executing said non monotonic logic, the Dempster Shafer theory with respect to said first pair of sets and said previous assumption data; modifying, by said computer processor based on results of said additionally executing, said first plausibility percentage value of said first selected set; generating, by said computer processor based on results of said additionally executing and said modifying, an updated recommendation for said first event, said updated recommendation associated with a second selected set of said first pair of sets, said second selected set differing from said first selected set; generating, by said computer processor executing said non monotonic logic and said inference engine software application, first updated assumption data associated with said first assumption data and said previous assumption data, wherein said previous assumption data, said first assumption data, and said first updated assumption data each comprise assumptions associated with conditions of vehicles detected by said sensors; and storing, by said computer processor in said truth maintenance system database, said first assumption data and said first updated assumption data.