redbiom Issue with syntax error

(qiime2-2019.10) Ishans-Air:~ ishanmanandhar$ redbiom search metadata “where ibd_diagnosis == ‘Crohn’s disease’” | wc -l

I am trying to run this code but I am getting this error.

ibd_diagnosis == ‘Crohn’s disease’
^
SyntaxError: invalid syntax
0
I am trying to download the metadata from American gut project using redbiom in QIIME 2 platform. There needs to be ’ in “Crohn’s disease” and I get syntax error. How can run this code “(qiime2-2019.10) Ishans-Air:~ ishanmanandhar$ redbiom search metadata “where ibd_diagnosis == ‘Crohn’s disease’” | wc -l” to download the metadata I want.Thank you