Something may be better than nothing . If trials compared low-cost therapy to the complete AZT regimen it's likely that the new regimens will prove less effective.
( Something ( ( may ( be ( better ( ( than ( nothing . ) ) ( ( If ( trials ( ( compared ( low-cost therapy ) ) ( to ( the ( complete ( AZT regimen ) ) ) ) ) ) ) ( it ( ( 's likely ) ( that ( ( the ( new regimens ) ) ( will ( prove ( less effective ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Something)) (VP (MD may) (VP (VB be) (ADJP (ADJP (JJR better)) (SBAR (X (ADVP (IN than)) (NP (NN nothing)) (. .)) (S (SBAR (IN If) (S (NP (NNS trials)) (VP (VBD compared) (NP (JJ low-cost) (NN therapy)) (PP (TO to) (NP (DT the) (JJ complete) (NNP AZT) (NN regimen)))))) (NP (PRP it)) (VP (VBZ 's) (ADJP (JJ likely)) (SBAR (IN that) (S (NP (DT the) (JJ new) (NNS regimens)) (VP (MD will) (VP (VB prove) (ADJP (RBR less) (JJ effective)))))))))))) (. .)))
They wanted to prove that even a tiny bit could make a difference.
( They ( ( wanted ( to ( prove ( that ( ( even ( a ( tiny bit ) ) ) ( could ( make ( a difference ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD wanted) (S (VP (TO to) (VP (VB prove) (SBAR (IN that) (S (NP (RB even) (DT a) (JJ tiny) (NN bit)) (VP (MD could) (VP (VB make) (NP (DT a) (NN difference)))))))))) (. .)))