This is possible because language is not the only symbolic means of communication. In order to prove that chimpanzees and gorillas are capable of language, and not simply a different kind of symbolic communication system, they must learn a sign language with the basic characteristics of human language.
Definition of Halloween. : October 31 observed especially with dressing up in disguise, trick-or-treating, and displaying jack-o'-lanterns during the evening.
The tradition of trick-or-treating, so associated with Halloween in English-speaking countries, has many similar practices in Italian folk-custom. FOr example, in Emilia-Romagna, in times past there was the tradition of la caritÃ  di murt, where poor people would go door to door, in this period, asking for food in the name of the dead.