extract subjects/tags from string automatically

I need a function in php that will take in a string paragraph, split it out, and extract the main subjects / tags from it then store them. IE sentence 'New York Yankees will decide to resign Alex Rodriguez as a free agent in 2007'.

It would pick out and return, 'New York Yankees', 'Alex Rodriguez', 'free agent', '2007', 'resign'.

for example

After it will store tags for that individual paragraph or db record in a db record that will be able to be queried later to return all matching records with that tag.

The db schema need to be used has to be fast and able to scale, suggested would be toxi solution at

[url removed, login to view]

Thanks please do not bid unless you have experience and know how to implement the solution, please PM ideas or questions, thanks. Must be good at english, and be able to meet a deadline with good communication skills.

PHP and MySQL are what will need to be used.

Thanks look forward to working with someone talented.

Skills: Data Processing, PHP, XML

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About the Employer:
( 2 reviews ) san diego, United States

Project ID: #204138