Is it what we speak? write? what we find on the web? in what social context? Given some constraints, then perhaps yes, you could write a formal grammar and have

Is it what we speak? write? what we find on the web? in what social context? Given some constraints, then perhaps yes, you could write a formal grammar and have a parser How about defining it as what the two of us speak while having a beer in San Francisco? Is that constrained enough? If not, what constraints should be added until it becomes possble to write a parser?