Question

there / here is a dog on the yard.​

Answer 1

There is a dog on the yard.

Answer 2

It depends dog is here or there ¿

And if here, then (Here is a dog in the yard)

if there,then(There is a dog in the yard)

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Here we have to use,

in* not on

°

°

°

well most suitable is :

There is a dog in the yard.