question: Find the number of the products that have their color described as "red" and have a characteristic named "slow".
#1 return products 
#2 return colors of #1 
#3 return characteristics of #1 
#4 return #1 where #2 is  red 
#5 return #1 where #3 is  slow 
#6 return number of  both #4 and #5