While mentioned in passing throughout later seasons, Burke officially returns in the tenth season in order to conclude Cristina Yang's departure from the series.
does burke come back in grey's anatomy?
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Answer: yes

El Salvador have appeared in the finals of the FIFA World Cup on two occasions in 1970 and 1982.
did el salvador make it to the world cup?
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Answer: yes

Foal immunodeficiency syndrome (FIS), originally known as Fell pony syndrome, mainly affects two breeds of ponies: the Fell and Dales. FIS is a recessive genetic disease. Affected foals appear normal at birth, but become weak, and either die or are euthanized by three months of age due to persistent infections caused by immunodeficiency.
foal immunodeficiency syndrome in the fell and dales pony?
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Answer:
yes