การขอ structured output

class Line(BaseModel):
    text: str = Field(..., description="The text of the line")
    spoken_by: Character = Field(..., description="The character who speaks the line")
    spoken_to: Optional[list[Character]] = Field(None, description="The character who the line is spoken to")

class LineOutput(BaseModel):
    # Request more than one line from the text
    lines: ____[Line] = Field(..., description="The lines from the text")

# Return an instance of LineOutput
structured_llm = llm.____(____)

for line in structured_llm.invoke(prompt.format_messages(text=text)):
	print(line)