[ EFraction
    NormalFrac
    (ENumber "1")
    (EGrouped [ ENumber "2" , EIdentifier "\960" ])
, ESymbol Rel "="
, EFraction
    NormalFrac
    (EOver False (ENumber "1") (EPhantom (ENumber "0")))
    (EGrouped [ ENumber "2" , EIdentifier "\960" ])
]