Each year the vaccine contains the types of flu virus expected to cause illness in the coming year.
(the vaccine; contains; the types of flu virus expected to cause illness in the coming year; T:Each year) (the types of flu virus; expected; ) (the types of flu virus; to cause; illness; T:in the coming year)
the vaccine the types of flu virus the types of flu virus
contains expected to cause
the types of flu virus expected to cause illness in the coming year T:Each year
illness T:in the coming year