condtype;filter;r1cond;r2cond;c1cond;c2cond
row;;mammal = '1';bird = '1';;
row;;mammal = '1';;;
col;;;;num_legs = '4';
col;swims != '';;;swims = '1';
col;flies != '';;;flies = '1';
rowcol;num_legs = '2';bird = '1';;jumps = '1';