@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append(this.name).append(" :=").append(NEWLINE);
		for(int i=0; i<this.predicates.size(); i++) {
			sb.append("\t").append(this.predicates.get(i));
			if(i < this.predicates.size() - 1) {
				sb.append(",").append(NEWLINE);
			}
		}
		sb.append(".");
		return sb.toString();
	}