Task: Pos Tagging
Input (English): Sentence: There appeared to be no difference in the distribution of anti-A and anti-B activity in group O serum , though in two group O donors ( J. F. and E. M. ) only one type of {{ agglutinin }} was found in the regions of low anionic binding capacity ( Figs. 1 and 2 ) . 
Word: agglutinin
Output (English): NOUN