Sparql查询优化实体类型之间的可能谓词

Question

我正在尝试制定sparql查询，以便获得两种实体类型之间的所有可能谓词。这是我的方法：

 private class ViewPagerAdapter extends FragmentPagerAdapter {
        protected int currentPosition = -1;
        protected Fragment currentFragment;

        public ViewPagerAdapter(FragmentManager fm) {
            super(fm);
        }


        @Override
        public Fragment getItem(int position) {
           // ....
        }

        @Override
        public void setPrimaryItem(ViewGroup container, int position, Object object) {
            super.setPrimaryItem(container, position, object);
            this.currentPosition = position;
            if (object instanceof Fragment) {
                this.currentFragment = (Fragment) object;
            }
        }

        public int getCurrentPosition() {
            return currentPosition;
        }

        public Fragment getCurrentFragment() {
            return currentFragment;
        }
    }

但是，这种方法效率不高，有没有办法优化这个查询？