SELECT type FROM table_name_54 WHERE incorporated_in = "netherlands" AND principal_activities = "airline" AND company = "transavia.com"
Jenis mana yang memiliki incorporated di Belanda, kegiatan utama maskapai penerbangan, dan perusahaan TransAvia.com?
CREATE TABLE table_name_54 (type VARCHAR, company VARCHAR, incorporated_in VARCHAR, principal_activities VARCHAR)