Question: Chester Bennett was executed during an occupation that happened after how many days of fierce fighting ?

Related documents: [0]  [DOC] The Imperial Japanese occupation of Hong Kong (香港日治時期) began when the Governor of Hong Kong, Sir Mark Young, surrendered the British Crown colony of Hong Kong to Imperial Japan on 25 December 1941. The surrender occurred after 18 days of fierce fighting against the overwhelming Japanese forces that had invaded the territory. The occupation lasted for three years and eight months until Japan surrendered at the end of Second World War. The length of this period (三年零八個月) later became a metonym of the occupation. [END] 
[1]  [DOC] Chester Bennett (1892 - 1943) was an American film director. He was executed by the Japanese during the Occupation of Hong Kong in 1943. [END]  
Answer: 18 days
18 days