Penguin territory acquired food given by Sydney, say (6,4)

'by sydney say' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'penguin territory acquired food' is the wordplay.
I cannot quite understand how this works, but
'territory' could be 'city' (city is a kind of territory) and 'city' is present in the answer.
'acquired' could be 'got' ('get' can be a synonym of 'acquire') and 'got' is located in the answer.
'food' could be 'ham' (ham is a kind of food) and 'ham' is found in the answer.
This accounts for all the letters.
This explanation may well be incorrect...

'given' is the link.

Can you help me to learn more?