Are there algorithms that understand the meaning of the text?

Question

PHP

Guys. Are there any algorithms and is it even possible. What would it be like to write a script in php or python that could understand the meaning of the text or the main idea that the author conveys from small passages?
For example, what would the program understand from the text below that the main idea of ​​the sentences is - About the weather, which is changing for the better.

It could be said that the weather began to change for the better, but not in the opposite direction!
"V. M. Maslov, Notes of a Sakhalin taiga dweller. Photo stories"

I could be wrong, but it seems to me that this is almost impossible so far.

Answer 1

[...] a script that could understand the meaning of the text or the main idea that the author conveys from small passages?

For example, Yandex.Tomita -- https://tech.yandex.ru/tomita/

Answer 2

Neural networks can. But it will take a long time to train.

Answer 3

a program that understands the meaning of the text is called "strong AI"

Answer 4

https://www.ibm.com/watson/

Answer 5

Google NLP and Information/Relation extraction.

Answer 6

CS50 2016 - Week 7 - Machine Learning