146586
According to biographer Steve Malins , Numan took the real-life loss of a girlfriend , Joanna Casey , as the starting point for the song , reversed the sexuality of the affair and then embroidered the tale to arrive at the final lyric .
 Numan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Numan