Task: Pos Tagging
Input (English): Sentence: With either of the gradients described , chromatography on DEAE-cellulose separated agglutinins of the ABO series into at {{ least }} three regions ( Figs. 1 and 2 ) : one of extremely low anionic binding capacity , one of low anionic binding capacity and one of high anionic binding capacity . 
Word: least
Output (English): ADJ