Complex sentence: The people from the town considered this tree as the guardian of the town, because of which they celebrate the 15th of January, going around the tree and praying for peace, while it is also served as a refuge from the heat in the summer.
Split into simpler sentences: The people from the town considered this tree as the guardian of the town. They celebrate the 15th of January going around the tree and praying for peace, while it also served as a refuge from the heat in the summer.