Refactor code to improve performance and readability

napoleon.csv

@@ -1285,4 +1285,4 @@
 "he was awarded the title of the duke of reichstadt in 1818 and died of tuberculosis aged 21, with no children.",
 "napoleon acknowledged one illegitimate son: charles léon (1806 1881) by eléonore denuelle de la plaigne.",
 "alexandre colonna-walewski (1810 1868), the son of his polish mistress maria walewska, was also widely known to be his child, as dna evidence has confirmed.",
-"he may have had further illegitimate offspring.",
+"he may have had further illegitimate offspring.",