Facebook Group Scraper & Telegram Notifier

I need a Python script that continuously runs on a Linux server, scraping posts from a specific Facebook group. The script should filter posts based on product promotions and event announcements, sending these filtered posts to Telegram. Additionally, the script should have the capability to leave comments on matched posts, with comments generated from the keywords.

Ideal Skills:
- Proficient in Python and Linux server management
- Experience with web scraping (specifically Facebook)
- Knowledge of Telegram API
- Familiarity with comment generation algorithms

Note: The script needs to be robust, able to run continuously without supervision, and handle the Facebook group's traffic efficiently.