30070
The latter residues were substituted at O - 3 by ( 1 , 3 ) - , ( 1 , 5 ) - and ( 1 , 3 , 5 ) - linked alpha - L - Araf chains , and nonreducing end - units of alpha - L - Araf and beta - D - Galp .
 alpha - L - Araf, alpha - L - Araf, beta - D - Galp
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 alpha - L - Araf, alpha - L - Araf, beta - D - Galp