More recently, Heng completed sell-out runs of a "one-woman" play, Emily of Emerald Hill, in Hong Kong, Kuala Lumpur and on home turf.

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Inevitably, as darkness fell, Matt's dad, Bob Walker, would let loose a two-fingered whistle that shot up Emerald Lane's steep hill like a flamethrower.

CNN: Parents, why are you pushing your kids?

Cresting a hill, we saw six giraffe lope across an emerald basin.

BBC: The Serengeti in the off-season