Final answer:
The dialogue appears to be from a fictional work, but the additional context provided refers to a historical account of Japanese officers Mukai and Noda competing to kill 100 people during the Nanking Massacre in World War II.
Step-by-step explanation:
The dialogue between Wadsworth and Colonel Mustard mentioning 'three murders in three minutes' is from a fictional setting, specifically a movie or play. Without context, it is difficult to ascertain the exact nature of the question. However, if we consider the provided information 'Incredible Record' (in the Contest to Cut Down 100 People) - Mukai 106-105 Noda - Both 2nd Lieutenants Go into Extra Innings, it seems to be connected to an event or story, potentially historical, relating to Mukai and Noda.
This could refer to a grim competition between Japanese officers during the Nanking Massacre in World War II, wherein they contested in a sword duel to kill 100 people - a record documented in historical sources and extremely contentious. This is an example of the complexities involved in interpreting historical records and events, which may have implications for understanding issues of war crimes and the interpretation of history.