Ever since the Liberal government discontinued its cost sharing insurance arrangements with our Canadian museums, curators across the country have been calling for some kind of federal government assistance to help offset the huge costs associated with insuring travelling exhibitions.
There is some federal assistance that can be provided.
Since they have been calling for some kind of federal government assistance, means there is some federal assistance that can be provided as if there was none to be had they could not be calling for it.  Therefore, the statement is definitely correct.
( z1 possible :ARG1 ( z2 provide :ARG1 ( z3 assist :mod ( z4 federal ) :quant ( z5 some ) ) ) )