Update docs/en/getting-started/example-datasets/cell-towers.md

Co-authored-by: Anna <42538400+adevyatova@users.noreply.github.com>
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@ -99,7 +99,8 @@ So, the top countries are: the USA, Germany, and Russia.
You may want to create an [External Dictionary](../../sql-reference/dictionaries/external-dictionaries/external-dicts.md) in ClickHouse to decode these values.
### Example of using `pointInPolygon` function {#example-of-using}
## Use-case {#use-case}
Using `pointInPolygon` function.
Create a table where we will store polygons: