Only one, but it takes nine years.
Ten. One to actually change the lightbulb and nine to bring refreshments
Literally dozens.
One. She just holds it up there and waits for the world to revolve around her.
They don't change it. They just watch it burn out, then follow it around for another 15 years.
It takes three to five years before anyone will hire them.
Another year older!birt
Only one but it may take him/her more than five years to do it.