Table:
text: CAC 40
Composition
Composition
Company ICB_Sector Ticker_symbol Index_weighting_at_17_January_2013 Market_cap_at_April_2013_
Accor hotels AC 0.65 6.02
Air Liquide commodity chemicals AI 4.08 29.49
Alstom industrial machinery ALO 0.96 9.40
ArcelorMittal steel MT 1.69 15.4
AXA full line insurance CS 3.40 31.45
BNP Paribas banks BNP 6.24 48.78
Bouygues heavy construction EN 0.60 6.57
Capgemini computer services CAP 0.70 5.56
Carrefour food retailers and wholesalers CA 1.54 14.67
Crédit Agricole banks ACA 1.02 15.65
EADS aerospace EAD 1.89 31.82
EDF electricity EDF 0.57 28.78
Essilor medical supplies EI 2.05 17.74
Gemalto cyber security GTO 0.76 5.86
GDF Suez gas distribution GSZ 2.84 37.22
Groupe Danone food products BN 4.07 34.37

Question: Report the total index weight % on January 17, 2013 for Bouygues CAC 40 ?

Question: Name the icb sector for ai under CAC 40?