question: World Expos are also massive in scale, sometimes 300 or 400 hectares in size (Montreals Expo 67 was 410 hectares, Osakas Expo 70 was 330 hectares, Sevilles Seville Expo 92 was 215 hectares and Shanghais Expo 2010, 528 hectares). Pavilions participating at a World Expo can also be large, sometimes 5,000 to 10,000 square metres in size, mini city blocks in themselves and sometimes more than several stories in height. (The Australia Pavilion for Shanghai 2010 was 5,000 square metres, the British Pavilion sat on a 6,000 square metres lot, as did the Canadian Pavilion. The flagship Chinese National Pavilion had 20,000 square metres of exhibition space.)
Answer this question: Which expos were more than 400 hectares?
answer: Montreals

question: Trying to snap a four-game skid, the 49ers went home for a Week 8 intraconference duel with the New Orleans Saints. QB Alex Smith (who was recovering from a separate right shoulder since Week 4) was healthy enough to get the start. In the first quarter, San Francisco trailed early as Saints QB Drew Brees completed a 17-yard TD pass to WR Marques Colston, while kicker Olindo Mare nailed a 26-yard field goal. In the second quarter, the Niners' struggles continued as Brees completed a 2-yard TD pass to WR Terrance Copper, along with completing a 3-yard TD pass to Colston. In the third quarter, San Francisco managed to get on the board with kicker Joe Nedney getting a 29-yard field goal for the only score of the period. In the fourth quarter, New Orleans wrapped up the win with Brees and Colston hooking up with each other again on a 15-yard TD pass. The Niners' only response was Smith completing a 7-yard TD pass to TE Vernon Davis.
Answer this question: Were more touchdowns scored in the first two quarters or the last two quarters?
answer: first two quarters

question: Hoping to rebound from their road loss to the Bears, the Eagles went home for a Week 13 interconference duel with the Houston Texans on Thursday night. Philadelphia delivered the opening strike in the first quarter as quarterback Michael Vick found running back LeSean McCoy on a 1-yard touchdown pass. The Texans replied with kicker Neil Rackers getting a 48-yard field goal, yet the Eagles answered in the second quarter with a 4-yard touchdown run from McCoy, followed by a 36-yard field goal from kicker David Akers. Houston struck back with quarterback Matt Schaub completing an 8-yard touchdown pass to wide receiver Jacoby Jones. Philadelphia would close out the half with a 22-yard field goal from Akers. The Texans took the third quarter with running back Arian Foster catching a 13-yard touchdown pass from Schaub and running for a 3-yard touchdown run. The Eagles regained the lead with Vick's 2-yard touchdown run and his 5-yard touchdown pass to fullback Owen Schmitt. Afterwards, Philadelphia's defense prevented any comeback attempt from Houston.
Answer this question: How many yards combined are the top two longest touchdown passes?
answer:
21