The study was not set up to look at any differences between the two. These results are very encouraging and have given us great reasons to be optimistic for the future, said Professor Aziz Sheikh, director of the University of Edinburghs Usher Institute. These results are very encouraging and have given us great reasons to be optimistic for the future, said Aziz Sheikh, a professor at the University of Edinburghs Usher Institute who co-led the study. These results are very encouraging and have given us great reasons to be optimistic for the future, said Aziz Sheikh, a professor at the University of Edinburghs Usher Institute who co-led the study. Sheikh cautioned at a media briefing that the results are preliminary data, yet to be peer-reviewed by independent scientists, but added: I am very encouraged.
The research is not divided into positive and neutral.
( z0 divide :ARG1 ( z1 research ) :ARG2 ( z2 and :op ( z3 positive ) :op ( z4 neutral ) ) :polarity - )
(z0 / divide-02
    :ARG1 (z1 / research-01)
    :ARG2 (z2 / and
              :op1 (z3 / positive)
              :op2 (z4 / neutral-02))
    :polarity -)
The research is not divided into positive and neutral .
z0 :polarity 0
z0 :ARG1 z1
z2 :op1 z3
z0 :ARG2 z2
z2 :op2 z4