( ( Draw ( ( the results ) ( of ( ( ( a positive ) and ) ( a ( negative test ) ) ) ) ) ) . )
(ROOT (S (VP (VB Draw) (NP (NP (DT the) (NNS results)) (PP (IN of) (NP (NP (DT a) (NN positive)) (CC and) (NP (DT a) (JJ negative) (NN test)))))) (. .)))
Draw the results of a positive and a negative test.
(ROOT (S (NP (PRP We)) (VP (VBP call) (NP (NP (DT an) (JJ incorrect) (NN test) (NN result)) (SBAR (WHNP (WDT that)) (S (VP (MD should) (VP (VB have) (VP (VBN been) (ADJP (JJ positive) (NP (NP (DT a) (-LRB- -LRB-) (NN n) (-RRB- -RRB-)) (ADJP (JJ false) (JJ negative))))))))))) (. .)))