Instruction: Check the details of the two products to see if they refer to the same product. Output only yes or no.

Input:
Product 1:
title: smart steps 4th grade
description: a complete learning system for your fourth grade child! enroll your fourth grader in the program with more of everything: smart steps. developed by dedicated educators - watch your child's grades take off with this comprehensive curriculum based program.
manufacturer: dorling kindersley multimedia (dk)
price: 29.95

Product 2:
title: smart steps - 4th grade (jc)
description: the most complete learning system! super-fun activities: over 430 in all! core subjects: english math and science! motivating rewards ensure learning! put your child a step ahead! watch your child s grades take off with this comprehensi
manufacturer: nan
price: 11.95
Answer: yes