signature / digital signature

to sign

signature / government office / police station

participation, commitment

to participate, to join, to enter

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

activity, work, operation

to act, to operate, to work