N5
そこ
There, That place
そこの犬は危ないです。
That dog there is dangerous.
Explanation
「そこ」 means 'there': a place close to the listener (on your side). In conversation it also points to a place or topic the other person just mentioned.
Mixed up with
In a taxi, pointing ahead: 「そこで止めてください」 (Please stop there).
To call someone over: 「そこの人」 (you there).
The polite form is 「そちら」.