Pool testing allows scientists to test samples more efficiently, analyzing many samples at once. To test samples more efficiently, the researchers used a technique called 'pooling.' That is essentially most of America's workforce. Samples came from six major metropolitan areas: San Francisco, Boston, Minneapolis, Los Angeles, New York City, and Seattle. If a pool tests positive, scientists then re-test smaller groups of samples included in the pool in order to find the positive one.
pooling is beyond the scope of healthcare.
( z0 beyond :domain ( z1 pool ) :op ( z2 scope :poss ( z3 healthcare ) ) )
(z0 / beyond
    :domain (z1 / pool-01)
    :op1 (z2 / scope
             :poss (z3 / healthcare)))
pooling is beyond the scope of healthcare .
z0 :domain z1
z0 :op1 z2
z2 :poss z3