user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: Who was the inventor of the Dell.png image? 
Knowledge Triplets: Dell, base.schemastaging.organization_extra.phone_number, m.0_tlg_h
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhytg
m.04d1x97, business.employment_tenure.company, Dell
Dell, organization.organization.leadership, m.0w21lzb
Dell, business.employer.employees, m.03xdcnq
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlglm
Dell, business.employer.employees, m.04g7vq8
m.04d1x8k, business.employment_tenure.company, Dell
Dell.png, common.topic.image, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj175
Dell, business.business_operation.industry, IT service management
Dell, business.product_line.brand, Curvature
Dell, business.employer.employees, m.046w1cw
Dell, business.employer.employees, m.02_6s3q
m.0k2xfqm, organization.leadership.person, Michael S. Dell
Michael S. Dell, business.board_member.leader_of, m.0k2xfqw
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlcg4
Dell, base.schemastaging.organization_extra.phone_number, m.0109dmm8
Dell, business.business_operation.revenue, m.07z1cj0
Dell, business.employer.employees, m.04d1x97
Dell, business.employer.employees, m.04d10pv
m.04dy50m, business.employment_tenure.company, Dell
Dell, business.business_operation.current_assets, m.09181f1
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhxfv
Dell, business.business_operation.net_profit, m.04kbmls
Dell, common.topic.webpage, m.04js0pn
Dell, business.consumer_company.brands, m.0s77hm6
Dell, business.employer.employees, m.04d2407
Dell, business.employer.employees, m.04d10pb
Dell, computer.computer_manufacturer_brand.computer_models, Dell Inspiron 560 Desktop Computer
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlch2
m.09tx9p3, organization.organization_board_membership.organization, Dell
m.04d24cb, business.employment_tenure.company, Dell
m.046w5q7, organization.organization_board_membership.organization, Dell
m.04d23zx, business.employment_tenure.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vjxqn
Dell, organization.organization.board_members, m.04dnwjw
m.04dnwh0, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.04dnwh8
Dell, award.ranked_item.appears_in_ranked_lists, m.0g5bt8s
Dell, business.employer.employees, m.04d24cb
Dell, business.employer.employees, m.04d10ns
Michael S. Dell, organization.organization_founder.organizations_founded, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhqhp
Dell, business.employer.employees, m.04d234k
Dell, business.sponsor.sponsorship, m.05z301c
m.0k2xfqm, organization.leadership.organization, Dell
m.03x69bs, business.employment_tenure.company, Dell
m.02_9kk0, business.employment_tenure.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj48j
m.05nlyp9, business.employment_tenure.company, Dell
Dell headquarters, common.image.appears_in_topic_gallery, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj5k0
m.04d23_p, business.employment_tenure.company, Dell
Dell, organization.organization.board_members, m.09ty_2w
m.04d10hv, organization.organization_board_membership.organization, Dell
Dell, business.business_operation.industry, Computer
Dell, organization.organization.board_members, m.04vy8_7
m.03xdcn5, business.employment_tenure.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlcz4
m.0k2xfqw, organization.leadership.person, Michael S. Dell
Dell, business.employer.employees, m.04j858d
m.0b_lylp, business.competitive_space_mediator.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhs6w
Michael S. Dell, people.person.employment_history, m.04d1fhq
m.03xdcl8, business.employment_tenure.company, Dell
m.04d10gz, organization.organization_board_membership.organization, Dell
m.04d2345, business.employment_tenure.company, Dell
Dell, business.business_operation.assets, m.09181d5
m.04dy505, business.employment_tenure.company, Dell
Dell, business.business_operation.industry, Technology
Dell, base.schemastaging.organization_extra.phone_number, m.0_vc326
Dell, symbols.namesake.named_after, Michael S. Dell
Dell, organization.organization.headquarters, m.09r_844
Dell, business.employer.employees, m.05nlyp9
m.04dnwgr, business.employment_tenure.company, Dell
m.0w21lzb, organization.leadership.organization, Dell
Dell.png, common.image.appears_in_topic_gallery, Dell
Dell, business.employer.employees, m.04d10nc
Dell, business.employer.employees, m.04d1xl2
m.09t8ljw, organization.leadership.organization, Dell
Dell, business.employer.employees, m.04d23_p
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhp_j
m.047jv8d, organization.organization_board_membership.organization, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj0qn
Dell, business.business_operation.industry, Electronic Computer Manufacturing
Dell, business.employer.employees, m.04dy505
m.04d1xl2, business.employment_tenure.company, Dell
m.04j858d, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.03x99l8
m.02_6s3q, business.employment_tenure.company, Dell
m.02_9ky6, business.employment_tenure.company, Dell
Dell, computer.software_developer.software, Crowbar
m.04d234z, business.employment_tenure.company, Dell
m.04d1fhq, business.employment_tenure.person, Michael S. Dell
Dell, common.topic.notable_for, g.125gbnt1n
Dell, business.employer.employees, m.04j856b
m.04d10pv, business.employment_tenure.company, Dell
m.0r93_t_, business.acquisition.acquiring_company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0q50kdv
m.02_b5jz, business.acquisition.acquiring_company, Dell
Dell, organization.organization.board_members, m.04d10gz
Dell, business.employer.employees, m.04dnwh0
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj0b6
Dell, computer.software_developer.software, Dynamic Kernel Module Support
m.04fmrz2, business.acquisition.acquiring_company, Dell
Dell, organization.organization.companies_acquired, m.0r93_t_
m.09w3_gf, common.webpage.topic, Dell
m.07y9dls, award.ranking.item, Dell
m.05z301c, business.sponsorship.sponsored_by, Dell
Dell, freebase.valuenotation.is_reviewed, Phone number
Dell, base.schemastaging.organization_extra.phone_number, m.0q4_0ch
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj6cw
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj2rh
Dell, common.topic.webpage, m.09hxnnx
Dell, business.business_operation.competitive_space, m.0b_lylp
Dell, business.employer.employees, m.03x4w1l
Dell, organization.organization.board_members, m.04k9thg
Dell, organization.organization.founders, Michael S. Dell
m.09tx9pb, organization.organization_board_membership.organization, Dell
Dell, organization.organization.board_members, m.04f9z7y
Dell, business.business_operation.net_profit, m.09181c9
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhw4f
World, organization.organization_scope.organizations_with_this_scope, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vht8t
Dell, freebase.valuenotation.is_reviewed, Contact webpages
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlc38
Dell, organization.organization_member.member_of, m.0_6x7dq
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj22n
Dell, award.ranked_item.appears_in_ranked_lists, m.07z1cht
m.09tghns, organization.leadership.organization, Dell
m.07y9f8w, award.ranking.item, Dell
Dell, organization.organization.board_members, m.04d10gg
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlcnj
Dell, conferences.conference_sponsor.conferences, O'Reilly Open Source Convention
m.04j854v, business.employment_tenure.company, Dell
Dell, computer.computer_manufacturer_brand.computer_models, Dell Adamo
m.0qzfqgx, business.company_product_line_relationship.company, Dell
m.04d2407, business.employment_tenure.company, Dell
Dell, business.business_operation.retained_earnings, m.09181fx
Dell, business.employer.employees, m.04d245p
Dell, business.employer.employees, m.03x954k
Dell, business.employer.employees, m.04d1x9l
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj4f3
Dell, organization.organization.leadership, m.0k2xfqw
Dell, common.topic.webpage, m.04js0pv
Dell, award.ranked_item.appears_in_ranked_lists, m.07y9dls
Dell, business.business_operation.cash, m.09181fp
Dell, business.business_operation.revenue, m.03xfw49
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj3b3
Dell, common.topic.webpage, m.01xwrn8
m.05nlypl, organization.organization_board_membership.organization, Dell
Dell, organization.organization.board_members, m.09tx9p3
m.09tghn_, organization.leadership.organization, Dell
Dell, base.advertisingcharacters.product.advertising_characters, Steven Jackson
Dell, computer.computer_manufacturer_brand.computer_models, Dell XPS
Michael S. Dell, people.person.employment_history, m.05nlyp9
m.03xdngv, business.employment_tenure.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_tld09
m.04d1xls, business.employment_tenure.company, Dell
Dell, organization.organization.leadership, m.0k2xfqm
m.04dy4_m, business.employment_tenure.company, Dell
m.0s77hm6, business.company_brand_relationship.company, Dell
Dell, business.employer.employees, m.02_9kk0
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj0_h
Dell, business.consumer_company.products, m.0102jl1_
m.04d10q6, business.employment_tenure.company, Dell
Dell, organization.organization.leadership, m.09tghp7
Dell, base.schemastaging.organization_extra.phone_number, m.0_tldvh
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlgk5
Dell, base.schemastaging.organization_extra.phone_number, m.0q4zy1x
m.0b6rr86, common.webpage.topic, Dell
m.03xdcnq, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.04dnwhq
m.04gdmk2, business.employment_tenure.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vjwyr
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlfy2
m.03xdkmy, business.employment_tenure.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vjvzq
Dell, business.employer.employees, m.03xdcl8
Dell, business.business_operation.industry, Information technology consulting
Dell, business.employer.employees, m.04d240m
Dell, business.employer.employees, m.04d1xm4
Dell, organization.organization.board_members, m.04gbm1w
m.0j140z1, business.sponsorship.sponsored_by, Dell
Dell, organization.organization.geographic_scope, World
m.04d23pt, business.employment_tenure.company, Dell
m.07z1chl, award.ranking.item, Dell
m.04dnwjw, organization.organization_board_membership.organization, Dell
Dell, common.topic.webpage, m.04js0p9
m.02_wlwk, business.employment_tenure.company, Dell
Dell, business.business_operation.revenue, m.09181df
m.0g4y7p3, common.webpage.topic, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlfzn
Michael S. Dell, business.board_member.leader_of, m.0k2xfqm
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhy9q
m.04d23z9, business.employment_tenure.company, Dell
m.04d2459, business.employment_tenure.company, Dell
m.03x954k, business.employment_tenure.company, Dell
m.04d1x9l, business.employment_tenure.company, Dell
m.02t7h_t, business.employment_tenure.company, Dell
m.0422fr7, common.webpage.topic, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj55h
Austin, location.hud_county_place.place, Austin
Michael S. Dell, symbols.name_source.namesakes, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj4y_
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlc_4
m.07z1cht, award.ranking.item, Dell
Dell, business.employer.employees, m.04d2345
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj2y1
Dell, business.issuer.issue, DELL INC Common Stock
Dell, base.schemastaging.organization_extra.phone_number, m.0109dqlb
Dell, common.topic.webpage, m.0g4y7p3
m.03xdnn2, business.employment_tenure.company, Dell
Dell, business.employer.number_of_employees, m.02_9kjt
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlgqg
m.03x2skn, business.employment_tenure.company, Dell
m.05nlyp9, business.employment_tenure.person, Michael S. Dell
Dell, computer.computer_manufacturer_brand.computer_models, Dell Streak
Dell, business.business_operation.revenue, m.07z1cj7
Dell, business.employer.employees, m.02t7h_t
m.04dnwhq, business.employment_tenure.company, Dell
Dell, organization.organization.board_members, m.05nlypl
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlckv
Dell, business.employer.employees, m.04d23pt
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhrtc
Dell, computer.computer_manufacturer_brand.computer_models, Dell Vostro
m.04d234k, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.03xdcn5
m.0g5bt8s, award.ranking.item, Dell
m.09hxnnx, common.webpage.topic, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhz7y
Dell, computer.computer_manufacturer_brand.computer_models, Dell Latitude
Dell, base.schemastaging.organization_extra.phone_number, m.0_vjwcw
m.0102jl1_, business.company_product_relationship.company, Dell
m.04vy8_7, organization.organization_board_membership.organization, Dell
m.04js0pn, common.webpage.topic, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlh1b
m.03xb9jb, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.04d1x6h
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlgvw
m.04d10ns, business.employment_tenure.company, Dell
m.0_6x7dq, organization.organization_membership.member, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlg0_
Dell, business.employer.employees, m.04gdmk2
Dell, business.employer.employees, m.04d244x
Dell, business.employer.employees, m.03x69bs
m.03xd8yc, business.employment_tenure.company, Dell
m.03x4w1l, business.employment_tenure.company, Dell
m.07y9gtl, award.ranking.item, Dell
m.04d1x6h, business.employment_tenure.company, Dell
Dell, business.business_operation.net_profit, m.07z1cjp
m.04d23_9, business.employment_tenure.company, Dell
Dell, business.issuer.issue, DELL INC-T Common Stock
m.04d2461, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.04dy50m
m.04d1fhq, business.employment_tenure.company, Dell
Dell, organization.organization.leadership, m.09t8ljw
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj3gw
Dell, business.employer.employees, m.04d23z9
m.04d240m, business.employment_tenure.company, Dell
Dell, common.topic.notable_types, Computer Manufacturer/Brand
m.046w1d3, business.employment_tenure.company, Dell
Dell, computer.computer_manufacturer_brand.computer_models, Axim X50 series
Dell, organization.organization.board_members, m.04d10h9
Dell, freebase.valuenotation.is_reviewed, Official website
Dell, base.schemastaging.organization_extra.phone_number, m.0q4z_rx
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhwfc
m.03xc20y, business.employment_tenure.company, Dell
m.04js0p9, common.webpage.topic, Dell
Dell, business.employer.employees, m.04d1x8x
Dell, freebase.valuenotation.is_reviewed, Date founded
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj5qp
Dell, organization.organization.leadership, m.09tghn_
Dell, business.sponsor.sponsorship, m.0j140z1
Dell, organization.organization.companies_acquired, m.04fmrz2
Dell, base.schemastaging.organization_extra.contact_webpages, m.011cg0dg
m.04d244x, business.employment_tenure.company, Dell
Dell, common.topic.webpage, m.09w3_gf
m.04dnwh8, business.employment_tenure.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhw02
Dell, award.ranked_item.appears_in_ranked_lists, m.07y9f8w
Dell, business.employer.employees, m.04dy4_m
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlgyw
Dell, business.consumer_company.product_lines, m.0102jl6m
m.04j856b, business.employment_tenure.company, Dell
m.09ty_2w, organization.organization_board_membership.organization, Dell
Dell, business.employer.employees, m.03xdngv
m.04d10hn, organization.organization_board_membership.organization, Dell
Dell, business.business_operation.current_liabilities, m.09181cy
Dell, business.business_operation.net_profit, m.07z1cjg
Dell, common.topic.article, m.0py9n
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhspg
m.046w1cw, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.04d1fhq
Dell, organization.organization.companies_acquired, m.02_b5jz
Dell.png, common.image.size, m.02_9kjf
Dell, business.consumer_company.product_lines, m.0qzfqgx
Dell, business.employer.employees, m.04d10q6
Dell, base.schemastaging.organization_extra.contact_webpages, m.010h5y4v
Dell, organization.organization.board_members, m.04d10hn
m.05nlypl, organization.organization_board_membership.member, Michael S. Dell
Dell, business.employer.employees, m.02_wlwk
Dell, business.employer.employees, m.03xdkmy
Dell, business.employer.employees, m.02_9kk9
Dell, common.topic.webpage, m.0b6rr86
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlh7_
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlh4d
Dell, business.employer.employees, m.04dnwgr
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhzxb
Dell, award.ranked_item.appears_in_ranked_lists, m.07z1chl
Dell, business.employer.employees, m.04d2459
m.0k2xfqw, organization.leadership.organization, Dell
Dell, business.employer.employees, m.03x2skn
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhq6w
Dell, business.employer.employees, m.04d23zx
Dell, business.employer.employees, m.03xb9jb
Dell, organization.organization.leadership, m.09tghns
m.04d23zj, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.04j854v
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhwrj
m.02_9kk9, business.employment_tenure.company, Dell
m.03x89qq, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.03xd8yc
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhxmd
Dell, business.business_operation.operating_income, m.09181dt
Dell, business.business_operation.industry, Information technology
Dell, business.employer.employees, m.04d2461
Dell, award.ranked_item.appears_in_ranked_lists, m.07y9gtl
m.09tghp7, organization.leadership.organization, Dell
m.04d10pb, business.employment_tenure.company, Dell
m.04d10nc, business.employment_tenure.company, Dell
Dell, computer.computer_manufacturer_brand.computer_models, Dell Inspiron 1764
Dell, base.schemastaging.organization_extra.phone_number, m.0_vjy9j
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj0hr
Dell, business.business_operation.industry, Software
m.04k9thg, organization.organization_board_membership.organization, Dell
Dell, business.employer.employees, m.04dnwj3
Dell, business.employer.employees, m.04d1xls
Dell, business.employer.employees, m.04d1xwf
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlh6t
m.0102jl6m, business.company_product_line_relationship.company, Dell
Dell, business.employer.employees, m.03x89qq
m.04js0pv, common.webpage.topic, Dell
Dell, business.employer.employees, m.02_9ky6
Dell, business.employer.employees, m.03xc20y
Dell, common.topic.image, Dell headquarters
Dell, business.employer.employees, m.04d23zj
Dell, organization.organization.board_members, m.046w5q7
Dell, business.employer.employees, m.04d23_9
m.01xwrn8, common.webpage.topic, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlh36
Dell, business.employer.employees, m.04d234z
Dell, organization.organization.place_founded, Austin
Dell, computer.computer_manufacturer_brand.computer_models, Dell Inspiron 1525
m.04d1xm4, business.employment_tenure.company, Dell
m.04d10gg, organization.organization_board_membership.organization, Dell
Dell, base.giftcards.gift_card_issuer.gift_cards, Dell Gift Card
Michael S. Dell, business.board_member.organization_board_memberships, m.05nlypl
O'Reilly Open Source Convention, conferences.conference_series.sponsoring_organization, Dell
m.04d1x8x, business.employment_tenure.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlc9m
Dell, base.schemastaging.organization_extra.phone_number, m.0q4_78z
Dell, base.schemastaging.organization_extra.phone_number, m.0q4zzty
Dell, business.employer.employees, m.03xdnn2
Dell, organization.organization.board_members, m.047jv8d
m.04d10h9, organization.organization_board_membership.organization, Dell
Dell, organization.organization.board_members, m.04d1f68
m.04dnwj3, business.employment_tenure.company, Dell
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlcxy
Dell, common.topic.webpage, m.0422fr7
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlh26
Dell, common.topic.image, Dell.png
Dell, business.business_operation.liabilities, m.09181cp
Dell, business.employer.employees, m.04d1x8k
Dell, base.schemastaging.organization_extra.contact_webpages, m.010rgmky
m.04gbm1w, organization.organization_board_membership.organization, Dell
m.04d1xwf, business.employment_tenure.company, Dell
m.03x99l8, business.employment_tenure.company, Dell
Dell, symbols.namesake.named_after, Michael S. Dell
Dell, organization.organization.board_members, m.09tx9pb
m.04d245p, business.employment_tenure.company, Dell
Dell, business.employer.employees, m.046w1d3
Dell, base.schemastaging.organization_extra.phone_number, m.0_vhsvt
Dell, base.schemastaging.organization_extra.phone_number, m.0_tlgbh
Dell, organization.organization.board_members, m.04d10hv
m.04g7vq8, business.employment_tenure.company, Dell
Dell, business.business_operation.operating_income, m.03xfw4j
Dell, base.schemastaging.organization_extra.phone_number, m.0_vj4j0
m.04f9z7y, organization.organization_board_membership.organization, Dell
m.04d1f68, organization.organization_board_membership.organization, Dell

Answer: Michael S. Dell