how many company were founded in the same year as johann-wolfgang-von-goethe-gymnasium ?
select attr_open count attr_open distinct var_uri attr_close as var_c attr_close where brack_open var_uri rdf_type dbo_Company sep_dot var_uri dbo_foundingYear var_year sep_dot dbr_Johann-Wolfgang-von-Goethe-Gymnasium dbo_foundingYear var_year sep_dot dbr_Johann-Wolfgang-von-Goethe-Gymnasium a dbo_Companybrack_close