1563
Manganese ( Mn ) is recognized an essential nutrient , permanganate ( MnO4 ( - ) ) and manganous ( Mn ( + 2 ) ) ions are caustic , and the acute toxicity of KMnO ( 4 ) is defined by its oxidant / irritant properties and by the toxicity of Mn .
 Chemical: Manganese; Chemical: Mn; Chemical: permanganate; Chemical: MnO4 ( - ); Chemical: manganous; Chemical: Mn ( + 2 ); Chemical: KMnO ( 4 ); Chemical: Mn
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: Manganese; Chemical: Mn; Chemical: permanganate; Chemical: MnO4 ( - ); Chemical: manganous; Chemical: Mn ( + 2 ); Chemical: KMnO ( 4 ); Chemical: Mn