Original sentence: The monument is a large granite obelisk bearing a tablet containing John Greenleaf Whittier's 1863 poem "Barbara Fritchie".The poem was very popular in the north but she would never know the notoriety she had achieved, because she had died a year earlier at the age of 96
Edited sentence: The monument is a large granite obelisk bearing a tablet containing John Greenleaf Whittier’s 1863 poem Barbara Fritchie.The poem was very popular in the north but unfortunately she would never know the notoriety she had achieved, because she had died a year earlier at the age of 96