Given the task definition and input, reply with output. You are given a sentence and a question in the input. The information provided in the sentence should be enough to answer the question. You're expected to write the correct answer. Do not use any facts other than those provided in the sentence.

Sentence: Rex moved slowly towards the gate at first, but as he neared the sidewalk he shot through the opening, his shiny black fur twinkling in the sun as he sped down the street. 
Question: How does Rex escape the yard?

gate not closed.