Rate the following argument fragment on its writing, argument, and language skills:
Concluding Statement: So overall in this essay I have covered three thing.

I have covered my first argument, which is that we have not found aliens even though we have been searching all of these years.

I have covered my second argument, which is that nature has formed many structures like this on earth, it could have been formed out of the land.

And I also covered the rebuttle, which is that there is a possibility that this was built by aliens because we have found traces.

So in conclusion, this structure was not built by humans, this was land made.

Score: 1