2. The data normalization system of claim 1 , the operations further comprising: determining that the second string includes a set of characters or patterns indicating that the second string is the surname.
2. The data normalization system of claim 1 , the operations further comprising: determining that the second string includes a set of characters or patterns indicating that the second string is the surname. 3. The data normalization system of claim 2 , wherein determining that the second string includes the set of characters indicating that the second string is a surname comprises: analyzing the second string based on a list of known character sets or patterns included in surnames; and determining that the set of characters or patterns included in the second string matches a known character set included in the list of known character sets or patterns included in surnames.