Original sentence: The bipartite Kneser graph  has as vertices the sets of k and n−k items drawn from a collection of n elements.The bipartite Kneser graph H5,2 is the Desargues graph and the bipartite Kneser graph Hn,1 is a crown graph
Edited sentence: The bipartite Kneser graph  has as vertices the sets of  and  items drawn from a collection of  elements.The bipartite Kneser graph  is the Desargues graph and the bipartite Kneser graph  is a crown graph