Samples came from six major metropolitan areas: San Francisco, Boston, Minneapolis, Los Angeles, New York City, and Seattle. Pool testing allows scientists to test samples more efficiently, analyzing many samples at once. That is essentially most of America's workforce. To test samples more efficiently, the researchers used a technique called 'pooling.' If a pool tests positive, scientists then re-test smaller groups of samples included in the pool in order to find the positive one.
Pool testing allows scientists to test personal disregals.
( z0 allow :ARG0 ( z1 test :ARG2 ( z2 pool ) ) :ARG1 ( z3 test :ARG0 ( z4 scientist ) :ARG1 ( z5 disregard :ARG1-of ( z6 personal ) ) ) )
(z0 / allow-01
    :ARG0 (z1 / test-01
              :ARG2 (z2 / pool))
    :ARG1 (z3 / test-01
              :ARG0 (z4 / scientist)
              :ARG1 (z5 / disregard-01
                        :ARG1-of (z6 / personal-02))))
Pool testing allows scientists to test personal disregals .
z1 :ARG2 z2
z0 :ARG0 z1
z3 :ARG0 z4
z0 :ARG1 z3
z5 :ARG1-of z6
z3 :ARG1 z5