Sentence:  A circle graph with no cycle of length four is <WSD>colourable</WSD> with three colours.<!-- I'd use the following if it weren't snippet: "Steven Hope's illustrations are colourable by crayon." Books Ireland, Issues 138-155, 1990, http://books.google.com/books?id=8Q_jAAAAMAAJ&q=colourable+crayon --><!-- The following is perhaps not durably archived: 
Meaning of the word marked with <WSD> tags:  That can be coloured.