You will be given a definition of a task first, then some input of the task.
This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.

Passage: Sohn, competing for the Empire of Japan, won the gold medal at the 1936 Summer Olympics in the marathon. He ran the 42.195 kilometres course in 2:29:19.2, breaking the Olympic record. His Korean teammate Nam Sung-yong took the bronze medal. As Korea was under Japanese occupation at the time, the International Olympic Committee officially credited Japan with Sohn's gold and Nam's bronze in the 1936 Summer Olympics medal count. On December 9, 2011, the IOC recognized Sohn's Korean nationality in his official profile. It cited his efforts to sign his Korean name and stressing Korea's status as a separate nation during interviews. The move was part of the Korean Olympic Committee's repeated requests to acknowledge Sohn's background. However, the IOC ruled out changing the nationality and registered name per official records to prevent historical distortions.
Question: During what year was Korea under Japanese occupation?
Output:
date