Cairns, Australia, June 20 - 24, 2011
(Talk on June 23, 2011)
to be published as
"Selected topics on parton distributions functions"
by M. Hirai, H. Kawamura, S. Kumano, and K. Saito
(arXiv:1111.0353)
(11-C8) Overview on the Symposium
"Toward understanding of three-dimentional structure of the nucleon:
roles of antiquarks, gluons, and angular momenta"