139039
Because the quarterback does not look for the checkdown pass until after he has scanned for open wide receivers down the field for about 3 – 4 seconds , the defensive line has had time to enter the backfield and so a checkdown pass is often thrown in the face of pressure from the defensive line .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None