Given the task definition and input, reply with output. This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning).
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.

Passage: Since the later 20th century, the Seneca have been increasingly active in exercising sovereignty on their reservation and enforcing their property rights. Their relations with the non-Native surrounding population have become contentious, in regard to excise tax advantages and to their property rights. In the 1990s, the Senecas won a prolonged court battle to assume ownership of all land on their reservation, including that owned by private non-Seneca. The city had been developed under a 99-year federal lease arrangement with the Seneca Nation. It had provided land to railroads to encourage development, which the railroad developed for workers and their families, and related businesses. This arrangement was confirmed by acts of Congress in 1875, 1890 and 1990. When that lease expired in 1991, the Seneca Nation demanded that the previous owners sign new leases with their nation for not only the underlying land, but also the improvements as well, or be evicted. The Seneca evicted fifteen property owners from their homes for refusing to sign over their properties. The increase in lease revenue from this reinterpretation has generated sufficient revenue for the nation to pay its enrolled members a quarterly social dividend, providing those members with a basic income. In a similar case in 2012, the Seneca ordered an eviction of 80 residents of summer cottages at Snyder Beach on the Cattaraugus Reservation, a location near Sunset Bay. They had previously notified the owner of the land that his leases to non-Seneca were not permissible, but he had done nothing to clear his property. Some of the residents were from families who had rented there for decades. The Seneca described the non-Natives as constituting a long-standing "illegal occupation".
Did the Seneca Nation evict more people in the 1991 incident or the 2012 incident?