Definition: In this task, you are given a word, followed by two sentences. Your task is to figure out whether both the sentences use the aforementioned word with the same meaning. You should respond with 'True' if the words in both sentences share the same meaning, and 'False' otherwise.
Input: space 
 Sentence1: They stopped at an open space in the jungle. 
 Sentence2: The astronauts walked in outer space without a tether.

True.