5700
The location and approximate length of the intron are conserved in both the tomato and Arabidopsis genes , with the intron separating the ' nose ' region ( encoded by exon 1 ) from the central globular domain ( exon 2 ) .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None