Reduce there is / there are

In the best-case scenario, you may simply delete There is or There are (and possibly another word or two later in the sentence). For example, consider the following sentence:

There is a variable called met_trick that stores the current accuracy.

Removing There is replaces the generic subject with a better subject. For example, either of the following sentences is clearer than the original:

A variable named met_trick stores the current accuracy.

The met_trick variable stores the current accuracy.

Replacing There are with You strengthens the sentence:

You should know two disturbing facts about Perl.

Exercise

Clarify the following sentences by removing There is, and possibly rearranging, adding, modifying, or deleting other words:

1. There is a lot of overlap between X and Y.
2. There is no creator stack for the main thread.
3. There is a low-level, TensorFlow, Python interface to load a saved model.
4. There is a sharding function named distribute that assigns keys.