  Based on Bbar to D{(*)}K-K{*0} decay data, which supports factorization, we
propose to extract the kaon axial form factor in the factorization framework.
Experiment indicates that the K-K{*0} pair is produced by an axial current
where only one out of three axial form factors is dominant. The axial form
factor can be extracted by fitting the K-K{*0} mass spectrum with an
a_1(1260)-resonance plus QCD-motivated non-resonant contributions, which can be
improved as data improves.
