Question: What was the contest between two officers about?
About the article "Nanking Massacre", section "Japanese war crimes on the march to Nanking".

Candidate passages:
"Les amants de minuit" (, ) was the second Luxembourgish entry in the Eurovision Song Contest 1956 (the rules of this Contest and no other allowing two entries per country), performed in French by French singer Michèle Arnaud.
The song is in the "chanson" style popular in the early years of the Contest.
Arnaud describes the meeting of two "midnight lovers", and sings that only the night knows what passes between them before they return to their normal lives in the morning.
The song was performed thirteenth on the night (following France's Dany Dauberson with "Il est là" and preceding Italy's Tonina Torielli with "Amami se vuoi").
As the scoreboard of this Contest has never been made public, no statements about score or placing can be made, however the song did not win.
The song was accompanied at the 1956 contest by Arnaud with "Ne crois pas" and was succeeded as Luxembourgish representative at the 1957 contest by Danièle Dupré with "Amours mortes (tant de peine)". 
WISS Trivia Contest was a trivia contest that was held annually on WISS-AM between 1982 and 2005.
The contest was billed as the "world's longest running commercial trivia contest" before the 2006 contest was canceled. 
The 2013 contest was announced on April 1, 2013, and is due July 4, 2013.
It is about a fictional social website called "ObsessBook".
The challenge is to write a function to compute the DERPCON (Degrees of Edge-Reachable Personal CONnection) between two users that "accidentally" computes a too low distance for a special user. 
Approach of the Imperial Japanese Army.
Japanese war crimes on the march to Nanking.
Although the Nanking Massacre is generally described as having occurred over a six-week period after the fall of Nanking, the crimes committed by the Japanese army were not limited to that period.
Many atrocities were reported to have been committed as the Japanese army advanced from Shanghai to Nanking.
According to one Japanese journalist embedded with Imperial forces at the time, "The reason that the Army is advancing to Nanking quite rapidly is due to the tacit consent among the officers and men that they could loot and rape as they wish.
"Novelist Ishikawa Tatsuzo vividly described how the 16th Division of the Shanghai Expeditionary Force committed atrocities on the march between Shanghai and Nanking in his novel "Ikiteiru Heitai" (Living Soldiers), which was based on interviews that Tatsuzo conducted with troops in Nanking in January 1938.
Perhaps the most notorious atrocity was a killing contest between two Japanese officers as reported in the "Tokyo Nichi Nichi Shimbun" and the English language "Japan Advertiser".
The contest— a race between the two officers (later executed for wartime atrocities) to see which of them could kill 100 people first using only a sword— was covered much like a sporting event with regular updates on the score over a series of days.
In Japan, the veracity of the newspaper article about the contest was the subject of ferocious debate for several decades starting in 1967.
In 2000, a historian concurred with certain Japanese scholars who had argued that the contest was a concocted story, with the collusion of the soldiers themselves for the purpose of raising the national fighting spirit.
In 2005, a Tokyo district judge dismissed a suit by the families of the lieutenants, stating that "the lieutenants admitted the fact that they raced to kill 100 people" and that the story cannot be proven to be clearly false.
The judge also ruled against the civil claim of the plaintiffs because the original article was more than 60 years old.
The historicity of the event remains disputed in Japan.
Ranks are divided between Company Officers and Fire Department Officers, which can be subdivided between Active Officers (Field Officers) and Administrative Officers each.
Although the Active officers are the Captain, and two or three lieutenants, these three active officers are distinguish by their red helmet