Real property is subject to reversion if there was reversionary language in the deed or will that transferred the title.

A reversionary clause provides that the grantee must fulfill some obligation or restriction or the property reverts back to the former owner. To 'satisfy' the reversionary clause you fulfill the obligation

Reversionary Bonus Means, Life insurance company will declare bonus every year fo the Traditional and Endownment policies. It based upon company profit by that particular type of products. And reversionary bonus wil increase gradually for every year.

distinguish between ordinary revival scheme and special revival scheme

They built a house, presumably with your permission. For the rest, you need to visit a lawyer to see what your situation is legally.