A boy walks down the sidewalk with a trash bag while two other boys follow him .
It is improbable that a boy walks a bag of trash to the dumpster with two boys following .
It is likely that a boy walks a bag of trash to the dumpster with two boys following .
It is improbable that a boy walks a bag of trash to the dumpster with two boys following .
A boy walks a bag of trash to the dumpster with two boys following .