Texture, colour, forme and lign
Answer:
Language is Spanish. The answer would be:
"The Mackenzie is the longest river in Canada."
Terence Tao is a supreme problem-solver whose spectacular work has had an impact across several mathematical areas. He combines sheer technical power, an other-worldly ingenuity for hitting upon new ideas, and a startlingly natural point of view that leaves other mathematicians wondering, " Why didn't anyone see that before?"