user     query         product     relevance  some_features
A        "red sofa"    Pc             2
A        "red sofa"    Pa             1
A        "red sofa"    Pb             1
A        "red sofa"    other products 0
B        "red sofa"    Pd             2
B        "red sofa"    Pa             1
B        "red sofa"    Pe             1
B        "red sofa"    other products 0
C        "blue chair"  Pu             2
C        "blue chair"  Po             1
C        "blue chair"  Ps             1
C        "blue chair"  other products 0

query         product     relevance  some_features
"red sofa"    Pc             2
"red sofa"    Pa             2
"red sofa"    Pb             1
"red sofa"    Pd             2
"red sofa"    Pe             1
"red sofa"    other products 0
"blue chair"  Pu             2
"blue chair"  Po             1
"blue chair"  Ps             1
"blue chair"  other products 0