20639
This work studies the effects of water deficit and heat , as well as the involvement of chlororespiration and the ferredoxin - mediated cyclic pathway , on the tolerance of photosynthesis to high light intensity in Hibiscus rosa - sinensis plants .
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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:
 None