Answer:
"Beatles' drummer, Richard Starkey, was born in Liverpool, England, so he is known to the world as Ringo Starr", has a clear and concrete writing error. Thus, the word "so" has no reason to be in said wording, as the fact that Richard Starkey was born in Liverpool is in no way a condition for the world to know him as Ringo Starr. In other words, the word "so" as a connector within the sentence does not follow logical parameters, as it does not deal with a cause-consequence situation.
