Here 為 (pronounced in the second tone) means is (是). It's used in formal writing.
Also, you needn't put spaces in between the characters.
October 27, 2019
October 29, 2019
A great question! “为” has two tones, wéi and wèi. Here the 为 in your sentence should be pronounced as wéi. It means “是”（roughly in English is “is”) .
Reference： 百度汉语， https://hanyu.baidu.com/zici/s?wd=为&query=为&srcid=28532&from=kg1&srcid=&query=为