2898
The immediate 5 ' - flanking region was GC - rich with 3 SP - 1 - like and 2 AP - 2 sites identified in close proximity to the transcription start site .
 GENE: SP - 1 - like; GENE: AP - 2 sites
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: SP - 1 - like; GENE: AP - 2 sites