SELECT count(*) FROM participants WHERE participant_type_code  =  'Organizer'
How many participants belong to the type 'Organizer'?
[Schema (values) (types)]: | local_govt_in_alabama |  Services : service_id (text) , service_type_code (number) | Participants : participant_id (text) , participant_type_code (number) , participant_details (text) | Events : event_id (text) , service_id (number) , event_details (text) | Participants_in_Events : event_id (text) , participant_id (number);