how many company were founded in the same year as all japan intercollegiate volleyball championship ?
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_All_Japan_Intercollegiate_Volleyball_Championship dbo_foundingYear var_year sep_dot dbr_All_Japan_Intercollegiate_Volleyball_Championship a dbo_Companybrack_close