Task: Question Generation
Input (English): Passage: Captain John Lovewell made three expeditions against the Indians. On the first expedition in December 1724, he and his militia company of 30 men  left Dunstable, New Hampshire, trekking to the north of Lake Winnipesaukee  into the White Mountains of New Hampshire. On December 10, 1724, they and a company of rangers killed two Abenakis.:65 In February 1725, Lovewell made a second expedition to the Lake Winnipesaukee area.:65 On February 20, his force came across wigwams at the head of the Salmon Falls River in Wakefield, New Hampshire, where ten Indians were killed.
Output (English): In which month did two expeditions overlap?