Sentence:  The car in which I had taken Olivia to dinner and then out to the cemetery — a historic vehicle, even a monument of sorts, in the history of fellatio's <WSD>advent</WSD> onto the Winesburg campus in the second half of the twentieth century — went careening off to the side... 
Meaning of the word marked with <WSD> tags:  arrival; onset; a time when something first comes or appears