public boolean isSentenceEnd(int c) {
        return (c == '\u002E' || c == '\u0021' || c == '\u003F' || c == '\u203D' || c == '\u1362' || c == '\u0964' ||
                c == '\u0965' || c == '\u2E2E' || c == '\u061F' || c == '\uFF01' || c == '\uFF1F' || c == '\uFF61' ||
                c == '\u3002');
    }
Returns whether the given character is of a type used to mark the end of a sentence.
linguistics/src/main/java/com/yahoo/language/process/CharacterClasses.java