### Clue: occupying Eastern section of church in Vatican City, say (7)
### Answer: ENCLAVE 
 ### Explanation: Definition: Vatican City, say
 CL(Roman numeral for 150) **contained in**(occupying) [ E(abbrev. for "eastern") + NAVE(the central section in a church, often flanked by aisles).
Defn: An example of which;say, is the Vatican City, in relation to Italy.