5981
We used 454 pyrosequencing on large subunit ribosomal DNA ( LSU rDNA ) fragments to assess the diversity from size - fractioned plankton samples collected in the Bay of Naples .
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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: Chemical 
Text: {0} 
 Entities:  
Answer:
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