These events take place from spring through fall. 2016. 2016. 2016. 2016.
these events take place over the years that are already past.
( z0 event :mod ( z1 this ) :time ( z2 over :op ( z3 multiple :op ( z4 temporal-quantity :quant 1 :unit ( z5 year ) ) ) ) :time ( z6 past :time ( z7 already ) ) )
(z0 / event
    :mod (z1 / this)
    :time (z2 / over
              :op1 (z3 / multiple
                       :op1 (z4 / temporal-quantity
                                :quant 1
                                :unit (z5 / year))))
    :time (z6 / past
              :time (z7 / already)))
these events take place over the years that are already past .
z0 :mod z1
z0 :time z2
z2 :op1 z3
z3 :op1 z4
z4 :unit z5
z4 :quant 0
z6 :time z7
z0 :time z6