Battle of İnceğiz
The Battle of İnceğiz was fought sometime in late 1411 or early 1412 near Constantinople between the rival sons of the Ottoman Sultan Bayezid I , Mehmed Çelebi and Musa Çelebi , during the final stages of the civil war known as the Ottoman Interregnum . 
<triplet> Constantinople <subj> Ottoman <obj> country <triplet> Bayezid I <subj> Mehmed Çelebi <obj> child <subj> Musa Çelebi <obj> child <triplet> Mehmed Çelebi <subj> Bayezid I <obj> father <subj> Musa Çelebi <obj> sibling <triplet> Musa Çelebi <subj> Mehmed Çelebi <obj> sibling