Simplify the following text for a Grade 10 native English-speaking person.
Original: An advertising campaign featuring Smokey was created in 1944 with the slogan , `` Smokey Says â `` Care Will Prevent 9 out of 10 Forest Fires '' .
Simplified: An advertising campaign featuring Smokey was started in 1944 with the slogan , `` Smokey Says â `` Care Will Prevent 9 out of 10 Forest Fires '' .