111751
There has been considerable debate over the relationship between APD and Specific language impairment ( SLI ) .
 Specific language impairment ( SLI )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Specific language impairment ( SLI )