Answer the question from the given passage. Your answer should be directly extracted from the passage, and it should be a single entity, name, or number, not a sentence.

Example input: Passage: Martin Luther married Katharina von Bora, one of 12 nuns he had helped escape from the Nimbschen Cistercian convent in April 1523, when he arranged for them to be smuggled out in herring barrels. Suddenly, and while I was occupied with far different thoughts, he wrote to Wenceslaus Link, “the Lord has plunged me into marriage. At the time of their marriage, Katharina was 26 years old and Luther was 41 years old. Question: In a letter who did Luther credit for his union with Katharina?
Example output: the Lord
Example explanation: The paragraph clearly states that, Luther has credited the Lord for his union with Katharina, hence the Lord is correct answer.
Q: Passage: In 1998, the network began using a minimalist graphical identity, designed by Pittard Sullivan, featuring a small black-and-white 'ABC Circle' logo on a yellow background (promotions during this time also featured a sequence of still photos of the stars of its programs during the timeslot card as well as the schedule sequence that began each night's prime time lineup). A new four-note theme tune was introduced alongside the package, based around the network's 'We Love TV' image campaign introduced that year, creating an audio signature on par with the NBC chimes, CBS' various three-note soundmarks (including the current version used since 2000) and the Fox Fanfare. The four-note signature has been updated with every television season thereafter (though variants of it used since the 1998–99 season remain in use during the production company vanity cards shown following the closing credits of most programs). In the fall of 2015, ABC is stopped with its 1998–2002 four-note jingles for promotions and production company vanity cards following the closing credits of most of its programs over seventeen years, now it have a different and adventure-type music (with the drums of the network's four-note signature in the ending). The old four-note theme tune is still used by ABC on Demand to the beginning of the ABC show. Question: Who designed ABC's 1998 new graphic design?
A:
Pittard Sullivan