    Sentence 1: Hurricane warnings were  posted Frid along parts of the lower]  Texas coast as Tropical Storm Erika  sped across the Gulf of Mexico and  headed for landfall .    Sentence 2: One month after Hurricane|  Claudette pounded Texas , hurricane}  warnings were posted Friday along|  parts of the coast as, fast-moving]  Tropical Storm Erika ch a across|  the gulf.         