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: The special forces were on the ground in noncombat roles  coordinating and guiding  the battle against Houthi forces and fighters loyal to former Yemeni President Ali Abdullah Saleh , the source said . 2: Houthis are battle-hardened guerrilla fighters and could cross into Saudi Arabia . 3: Saudi forces in non-combat roles  coordinating and guiding  fight against Houthis , source says .

1: Houthi forces 2: Houthis 3: Houthis