Watch tv has a precondition of television. Write book has a sub-event of read. Fight enemy does not have a sub-event of water may get into your nose. Glass fall has a sub-event of water may get into your nose. Watch tv has a sub-event of be entertain. Write book does not have a sub-event of lose some blood. Fight enemy does not have a sub-event of be entertain. Read does not have a sub-event of hamburger will be chew. Write book does not have a sub-event of hamburger will be chew. Read has a sub-event of sit down. Sit down has a sub-event of watch tv. Go to play has a sub-event of be entertain.
Sit down has a sub-event of be entertain.