In week 10, the Lions traveled east to rainy Orchard Park, New York to take on the Buffalo Bills. Neither team scored in the first quarter. In the second quarter, the Bills got on the board first with a 1-yard run by Fred Jackson. The Lions responded just before halftime with a 25-yard field goal by newly signed kicker Dave Rayner. The only score of the third quarter was a 16-yard TD catch by Fred Jackson of the Bills. The Lions kicked  a 45-yard field goal midway through the fourth. Late in the game, the Lions attempted a comeback with a 20-yard TD catch by Calvin Johnson. They went for a 2-point conversion for the tie but failed. With the loss not only did the Lions fall to 2-7, but it was their 25th consecutive road loss, setting a new league record.

Based on the above article, answer a question. What two play conversions did the Lions gain in the fourth quarter to attempt a tie?
the Lions attempted a comeback with a 20-yard TD catch by Calvin Johnson. They went for a 2-point conversion for the tie but failed.