Definition: You will be given three sentences. Read them, then identify a noun phrase (person, place, or thing) or event that is shared between all three sentences. As the output, write the span of the text corresponding to that phrase in each sentence. Keep the order of the sentences, that is, your answer should look like: 1: *a phras from sentence 1e* 2: *a phras from sentence 2* 3: *a phrase from sentence 3*
Input: 1: In a tweet , the space agency said astronaut Terry Virts experienced water inside his helmet , just as he did Wednesday , but  it 's a known issue ; no concern .  2: Water in the sublimator cooling component can condense when the suit is repressurized after a spacewalk , causing a small amount of water to push into the helmet , NASA said . 3: Astronaut Terry Virts found a small amount of water inside his helmet .

1: water 2: water 3: water