Size: d1 (20 cm), d2 (50 cm), d3 (70 cm), d4 (60 cm), c5 (50 cm) If we are interested in the three most salient dogs (d 1 , d 2 , and d 4 ) then the large(est) dog designates d4, but if we are interested in the four most salient ones (d 1 , d 2 , d 3 , and d 4 ), then it designates d 3 , for example.
the description is ambiguous between d3 and d4, depending on whether we attach greater importance to salience or size.