sign-vpc-v; 4 Senses

Sense Number 1: resign or transfer ownership of

Commentary: Includes: SIGN AWAY, SIGN OVER, SIGN OFF

Examples:
The man just brought him in and signed him over to us.
Others simply signed themselves over to the care of powerful lords.
Ok, so you pretty much signed your life away for the next 30 years.
She's pregnant and the father of the child wants to sign off his paternal rights.

Mappings:
WordNet Verb Particle Constructions, Multiword Expressions:
sign_away 1
sign_over 1

Sense Number 2: register or be registered upon entry or arrival

Commentary: Includes: SIGN IN, SIGN ON

Examples:
When do I need to sign in at the main hospital entrance?
I'm signed in Yahoo IM at work and forgot to log out.
All visitors must sign in at the reception/security desk.
I'm surprised to see only 97 members signed on the chat forum.

Mappings:
WordNet Verb Particle Constructions, Multiword Expressions:
sign_in 1

Sense Number 3: end communication or broadcasting

Commentary: Includes: SIGN OFF, SIGN OUT

Examples:
I was just about to sign off when she messaged me.
In one recent e-mail to a journalist friend, she signed off with a casual "good vibes to you."
Gregg signed off the video conference with a smile on his face.
They sign off by wishing the restaurant luck and success in the cheeseburger world.
If you sign out by mistake, just reconnect and sign in under another name.

Mappings:
WordNet Verb Particle Constructions, Multiword Expressions:
sign_off 1

Sense Number 4: engage in an agreement or contract; join or enroll

Commentary: Includes: SIGN ON, SIGN UP, SIGN OFF

Examples:
The group manager must sign off on the project priority and estimated completion date.
You might be glad to know that she's signed on for the next season.
Tedd signed up two new rappers as members of his Mau Mau Camp.
There are web-based emails you can sign up for free.

Mappings:
PropBank: sign.02,sign.03,sign.04
WordNet 3.0 Sense Numbers: 2, 3, 4
WordNet Verb Particle Constructions, Multiword Expressions:
sign_up 1, 2
sign_on 1