The following image depicts a trial of the relational match to sample task with two features: shape and color. Only one target pair will share the same relations with the source pair.
There are three pairs of objects relevant to your task: the source pair (the top pair of objects), target pair #2 (the pair of objects on bottom left), and target pair (the pair of objects on the bottom right). 
Now, given the source pair and the two target pairs, identify the matching target pair. To accomplish this task, you can use the following steps:
1. Identify the features of the objects in each pair (i.e. shape and color).
2. Identify the relations over the features of each pair.
3. Determine which target pair shares the same relations with the source pair.
4. Return the number of the target pair that matches the relations of the source pair and explain your reasoning.