Original sentence: " Two Ithaca high school students, however, claim that Berner would have only been 16 or 17 in 1881 and it is therefore "improbable" that he would have owned an ice cream shop in that year.They also state that the dates in the obituary do not add up, as 40 years before 1939 is 1899 rather than 1881
Edited sentence: " However, birth records show that Edward Berner would have only been 16 or 17 in 1881, casting doubt on the claim that he owned a soda shop at that time.Further, the Chicago Tribune obituary from 1839 cites the date of the Sundae's creation as 1899, not 1881