The evidence for the continuing accretion of gas by the Milky Way involves high-velocity clouds, or HVCs--mysterious clumps of hydrogen, moving rapidly through the outer regions of the galaxy.
There are no high-velocity clouds in our galaxy.
( z1 cloud :polarity - :mod ( z2 velocity :ARG1-of ( z3 high ) ) :location ( z4 galaxy :poss ( z5 we ) ) )