Correlates having a question words in the web page title tag as a factor.
This factor correlates having a question word (who,what,where,why,when,how) in title tags (in the HTML source) with rankings.
The match words specifically are who, what, where, why, when, and how
You can learn more about the targeted zone for this factor at: https://www.w3schools.com/tags/tag_title.asp.
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