You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.

Passage: The outbreak of the Seven Years' War in Europe in 1756 resulted in renewed conflict between French and British forces in India. The Third Carnatic War spread beyond southern India and into Bengal where British forces captured the French settlement of Chandernagore in 1757. However, the war was decided in the south, where the British successfully defended Madras, and Sir Eyre Coote decisively defeated the French, commanded by Comte de Lally at the Battle of Wandiwash in 1760. After Wandiwash, the French capital of Pondicherry fell to the British in 1761. The war concluded with the signing of the Treaty of Paris in 1763, which returned Chandernagore and Pondichery to France, and allowed the French to have "factories" in India but forbade French traders from administering them. The French agreed to support British client governments, thus ending French ambitions of an Indian empire and making the British the dominant foreign power in India.
Question: Which french settlement did the British capture first, Chandernagore or Pondicherry?
Solution: span
Why? The answer "Chandernagore" is a word from the passage. So, the answer type is "span".

New input: Passage: In April 1400, Li Jinglong mobilised 600,000 men and began advancing northwards toward the Baigou River. On 24 April, the Yan forces engaged with the government forces in a decisive battle.The government forces ambushed Zhu Di, and the Yan forces suffered a series of defeat initially. Landmines were placed in the retreat path of the Yan forces by the government forces, which inflicted heavy losses for the Yan Army on their way back to the camp.A new battle ensued the following day, and the government forces were successful in attacking the rear of the Yan forces. Zhu Di led a personal charge against the main force of Li Jinglong, and the battle turned into a stalemate as Zhu Gaochi arrived with reinforcements.At this point, the wind started to blow and snapped the flag of Li Jinglong in half, which led to chaos in the government camp. Zhu Di seized the opportunity and launched a general assault and defeated the government forces. More than 100,000 government troops surrendered to the Yan forces, and Li Jinglong retreated back to Dezhou once again. On 27 April, the Yan forces began marching toward Dezhou to siege the city. The Yan forces captured Dezhou on 9 May, and Li Jinglong was forced to flee to Jinan. The Yan forces followed up immediately and encircled the city of Jinan on 15 May, and Li Jinglong fled back to Nanjing. Despite of losing the entire army and being condemned by the imperial court, Li Jinglong was spared of execution.
Question: What was the date in which a new battle ensued and the government forces were successful in attacking the rear of the Yan forces?
Solution:
date