The Greek alphabet was also used to label hurricanes last year after the traditional 21-name rotating list did not cover the amount of storms. Currently, there are no plans on how to label the variants after the 24 letters of the Greek alphabet are used up. They will now be given the letters Alpha, Beta, Gamma, and Delta respectively, to reflect their order of detection, with any new variants following the pattern down the Greek alphabet. The next letters on the list, if it comes to it, which it probably will, are epsilon, zeta, eta and theta. As the list above suggests, it is common, if not always official practice, to refer to viruses by the name of the place where they were first identified.
The Greek alphabet was adopted in 2000.
( z0 adopt :ARG1 ( z1 alphabet :mod ( z2 language :name ( z3 name :op "Greek" ) ) ) :time ( z4 date-entity :year 2000 ) )
(z0 / adopt-01
    :ARG1 (z1 / alphabet
              :mod (z2 / language
                       :name (z3 / name
                                 :op1 "Greek")))
    :time (z4 / date-entity
              :year 2000))
The Greek alphabet was adopted in 2000 .
z2 :name z3
z3 :op1 1
z1 :mod z2
z0 :ARG1 z1
z0 :time z4
z4 :year 0