3514
Here , the regulation effects of lanthanum ( La ( III ) ) on nitrogen assimilation in soybean seedlings ( Glycine max L . ) under ultraviolet - B radiation were investigated to elucidate the regulation mechanism of REEs on plants under UV - B radiation .
 Chemical: lanthanum; Chemical: La ( III ); Chemical: nitrogen
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: lanthanum; Chemical: La ( III ); Chemical: nitrogen