How will you use Pythons concordance command in NLTK for a text that does not belong to the package

NLTK's `concordance()` method is used to find and display occurrences of a word within a text along with its surrounding context. By default, the `concordance()` method works with NLTK's `Text` objects, which are instances of the `nltk.Text` class.

However, if you have a text that does not belong to NLTK's package and you want to use the `concordance()` method, you can convert your text into an NLTK `Text` object. Here's how you can do it:

1. **Tokenize the Text**:
   Tokenize your text into words using NLTK's tokenization methods such as `word_tokenize()` or `regexp_tokenize()`.

2. **Create an NLTK Text Object**:
   Create an NLTK `Text` object using the list of tokens obtained from tokenization.

3. **Use the `concordance()` Method**:
   Call the `concordance()` method on the NLTK `Text` object to find and display concordances of a specific word.

Here's an example:

```python
import nltk
from nltk.tokenize import word_tokenize
from nltk.text import Text

# Sample text (replace with your own text)
text = "This is a sample text. It contains several sentences for demonstration purposes."

# Tokenize the text
tokens = word_tokenize(text)

# Create an NLTK Text object
nltk_text = Text(tokens)

# Use the concordance method
nltk_text.concordance("sample")
```

In this example, we tokenize the sample text using NLTK's `word_tokenize()` method, create an NLTK `Text` object from the list of tokens, and then use the `concordance()` method to find and display occurrences of the word "sample" along with their surrounding context.

By following these steps, you can use NLTK's `concordance()` method with any text, not just those included in NLTK's package.