[Attempto] Doubt in RACE

[George Herson]

>There is a city X1.
>Delhi is the city X1.
>The city X1 is located in India.
>
>
>indicating that your sentence "It is located in India." is interpreted as "The city is located in India.", and not as you assumed as "Delhi is located in India.". 

Why doesn't conclusion "Delhi is the city X1" mean that "the city X1" and "Delhi" are the same thing to the reasoner?

thanks,
George Herson