[{"Bold_text": "preposition", "List Items": ["with a leg on each side of; straddling:She sat astride the horse.", "on both sides of:Budapest lies astride the river.", "in a dominant position within:Napoleon stands astride the early 19th century like a giant."]}, {"Bold_text": "adverb", "List Items": ["in a posture of striding straddling; with legs apart or on either side of something."]}]