Give the character's ID of the character that said the paragraph "O my poor brother! and so perchance may he be."
"O my poor brother! and so perchance may he be." refers to  PlainText = 'O my poor brother! and so perchance may he be.'
SELECT character_id FROM paragraphs WHERE PlainText = 'O my poor brother! and so perchance may he be.'
database name:db_id shakespeare
chapters table chapters Cols: id dtype integer, Act dtype integer, Scene dtype integer, Description dtype text, work id dtype integer, 
characters table characters Cols: id dtype integer, char name dtype text, abbreviation dtype text, Description dtype text, 
paragraphs table paragraphs Cols: id dtype integer, paragraph number dtype integer, Plain Text dtype text, character id dtype integer, chapter id dtype integer, 
works table works Cols: id dtype integer, Title dtype text, Long Title dtype text, character id dtype integer, genre type dtype text, 
