text = """After Du died of suffocation, her boyfriend posted a heartbreaking message online: "Losing consciousness in my arms, your breath and heartbeat became weaker and weaker. Finally they pushed you out of the cold emergency room. I failed to protect you."
Li Na, 23, a migrant worker from a farming family in Jiangxi province, was looking forward to getting married in 2015."""
Sentence tokenization for texts that contains quotes