Fbra commits to support laswa on lagos waterways clean up campaign
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Here's a rewritten version with a bit more clarity and proper grammar:
"Facebook (FBRA) has committed to supporting the Lagos State Waterways Authority (LASWA) on its Lagos Waterways Clean-up Campaign. This partnership aims to promote a cleaner and healthier environment for the people of Lagos and its waterways."
Please let me know if you'd like me to make any further changes!