Cessante persona naturali relata, cessat obligatio personalis: When the natural person dieth, the obligation ceaseth.
Cessante relatione vel persona civili, cessat obligatio talis, qua talis: The obligation which lay on a person in any relation merely as such, doth cease when that relation ceaseth.
Roman life, the -obligatio litteris-, while not exactly abolished, fell of itself into desuetude.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "obligatio" in a variety of sentences. We hope that you will now be able to make sentences using this word.