Mr. Gore is not attending the three-day convention, which runs through Tuesday, saying he had a prior obligation.

Parliament, of course, is not limited to the enactment of laws where there is a prior obligation on the subjects to behave in the required way.

Jones led the public to believe that the decision had come amid Perry's prior obligations, assisting Oprah Winfrey with her struggling OWN network.

Why is it not a detriment to the mother to have to prove a fact to the father-something she has no prior obligation to do?

For many the Engagement to the Commonwealth was impossible to take because it overrode their prior obligation to the monarchy (King Charles I and his heirs).

Though Lethal is still a member of the group, he did not join them on their 2011 reunion tour due to prior obligations with Limp Bizkit.

"I cannot work on it immediately, as I have a prior obligation."

The company said it had an unrelated prior contractual obligation to sell an 8.5 percent interest in Net Sao Paulo for about $8.1 million.

Woods did not appear on the live episode due to prior obligations.

If you'll excuse me, Lieutenant, I have a prior obligation I must attend to.