Chinese<br>Sally bought a book from the library. She opened it to page 3. She read the words but they didn't make since to her. She looked at the cover. She got a Chinese book by accident.
Sally was able to read Chinese.
The text states that Sally was unable to read the Chinese book.  Therefore, Sally definitely cannot read Chinese.  This is tricky because the text is about a book in Chinese, so the AI might assume Sally can read Chinese.
( z0 possible :ARG1 ( z1 read :ARG0 ( z2 person :name ( z3 name :op "Sally" ) ) :ARG3 ( z4 language :name ( z5 name :op "Chinese" ) ) ) )
(z0 / possible-01
    :ARG1 (z1 / read-01
              :ARG0 (z2 / person
                        :name (z3 / name
                                  :op1 "Sally"))
              :ARG3 (z4 / language
                        :name (z5 / name
                                  :op1 "Chinese"))))
Sally was able to read Chinese .
z2 :name z3
z3 :op1 1
z0 :ARG1 z1
z1 :ARG0 z2
z1 :ARG3 z4
z4 :name z5
z5 :op1 0