Exercise: FILTER

| Exercise: Write a query that shows sovereign states whose head of government was born in 1980 or later

Hint: select sovereign states (Q3624078) that have a head of government (P6) whose date of birth (P569) has the year 1980 or later, or who have their birthday 01-01-1980 or later.

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Another way of writing this query is using the exact date format:

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