Options Debug. Default Attributes Not known_by_data. Syntax ask_about = 'ask' (act) 'about' (subj)! Where act Isa Actor Else "You can only talk to other people..." And subj Isa Actor Or Object Else "Please talk about something interesting, like people or things." Actor mr_data At home Name Mr Data Verb ask_about Check subj is known_by_data Else Say mr_data. "doesn't know anything about" Say (subj). "$$." Does If subj = ball Then "'A ball is a spherical playtoy primarily used by humans for recreational purposes. It's use includes multi and single player games, but is also frequently used for shows of flexibility, dexterity and timing (known as juggling).', says Data." Else "'Although my knowledge is usually complete," Say subj. "baffles me.'" End If. End Verb. End Actor mr_data. Object computer End Object computer. Object ball Is known_by_data. End Object ball. Actor Geordie Is known_by_data. End Actor. Location home End Location home. Start At home. "Ask Mr. Data about the ball, the computer or Geordie."