An investigation has found that Unity Party presidential candidate, Mrs. Ellen Johnson-Sirleaf, United Democratic standard bearer, Charles Brumskine, and Liberian National Union standard bearer, John Morlue, have been in the position of U.S. permanent residency or green card.

Q with options: Can we draw the following conclusion?
Mrs. Ellen Johnson-Sirleaf is the leader of Unity party.

pick from the following.
 -- yes
 -- no
no