import { Word } from './Word';
export declare class Sentence {
    text: string;
    constructor();
    readonly verbWord: Word | undefined;
    readonly verb: string | undefined;
    readonly target: Word | undefined;
    words: Word[];
    readonly rootWords: Word[];
    addWord(word: Word): void;
    validate(): string | undefined;
    assumeVerb(verb: string): void;
}