<s>[INST] In this code, I will provide a design concept and ask you to write the main code to get started . Based on the concept, please provide a simple implementation.

**Concept:** Text Summarization System

The idea is to build a simple text summarization system that takes an input article (a long sequence of text), and summarizes it in a shorter, more readable form. The summarization process will rely on the **TF-IDF** ranking, a simple, yet efficient method for identifying the most important sentences in a text.

Some technologies to utilize, include:
1. Python
2. Natural Language Processing(NLP) Toolkit, NLTK 
3. Scikit-learn 

Our initial task is to design the program's structure. Here's the details on the methods you need to implement in the Text Summarization Engine:

   - Preprocess the text
   - Tokenize the text (subsection of the preprocessing)
   - Create a TF-IDF matrix from the text
   - Rank the sentences based on TF-IDF score
   - Summarize the text based on the ranked sentences

Here is an implementation to get us started:

```python
import nltk
from nltk.corpus import stopwords
import numpy as np
from scipy.sparse import csr_matrix
from sklearn.metrics.pairwise import cosine_similarity
from sklearn.feature_extraction.text import TfidfVectorizer

# Preprocessed_text
def preprocess_text(text):
    tokens = nltk.word_tokenize(text.lower())
    table = str.maketrans('', '', string.punctuation)
    stripped = [token.translate(table) for token in tokens]  
    words = [word for word in stripped if word.isalpha()]
    words = [word for word in words if word not in set(stopwords.words('english'))]    
    return words
```

Based on the implementation above, how do we complete the code with the described functionalities.

Assuming that the summarization process needs the total number of sentences, what is the total count of sentences in this example:

```python
article = """Pulp Fiction is a 1994 American crime film written and directed by Quentin Tarantino, who conceived it as the non-linear story to come first in his crime trilogy. It is considered a key example of independent cinema, and an all-time classic. Four separate parallel stories are woven together, tied to a briefcase with unknown contents, which are simulated to "be valuable." Each of the several agents "have turned pro with crime," but a significant contingent happen to take failures. In the movie, Marsellus, Vincent, and Jules agree to perform a paid job for Tarantino, then everything goes awry for them, and the complicated mess of brutality finishes."""
```

How can we section the code into different methods to eventually get the summarization?[/INST]