@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((literal == null) ? 0 : literal.hashCode());
		result = prime * result
				+ ((predictBIOChunk == null) ? 0 : predictBIOChunk.hashCode());
		result = prime * result
				+ ((originWord == null) ? 0 : originWord.hashCode());
		result = prime * result
				+ ((BIOChunk == null) ? 0 : BIOChunk.hashCode());
		result = prime * result + ((posTag == null) ? 0 : posTag.hashCode());
		result = prime * result
				+ ((predictRelType == null) ? 0 : predictRelType.hashCode());
		result = prime * result
				+ ((sentIndex == null) ? 0 : sentIndex.hashCode());
		result = prime * result + ((seqNo == null) ? 0 : seqNo.hashCode());
		return result;
	}