These events take place from spring through fall. 2016. 2016. 2016. 2016.
These events take place in the spring.
( z0 event :mod ( z1 this ) :time ( z2 date-entity :season ( z3 spring ) ) )
(z0 / event
    :mod (z1 / this)
    :time (z2 / date-entity
              :season (z3 / spring)))
These events take place in the spring .
z0 :mod z1
z0 :time z2
z2 :season z3